Not rewriting the quadratic equation in the standard form

Oct 13, 2025 by windailys.com 141 views

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Introduction

Quadratic equations are a fundamental concept in mathematics, and solving them is a crucial skill for students and professionals alike. In this article, we will explore the solutions of a quadratic equation, specifically the equation $x^2 - 6x = -58$ . We will substitute the values of $a$ and $b$ to complete the solutions and provide a step-by-step guide on how to solve quadratic equations.

What is a Quadratic Equation?

A quadratic equation is a polynomial equation of degree two, which means the highest power of the variable is two. The general form of a quadratic equation is $ax^2 + bx + c = 0$ , where $a$ , $b$ , and $c$ are constants, and $x$ is the variable.

The Quadratic Equation $x^2 - 6x = -58$

The given quadratic equation is $x^2 - 6x = -58$ . To solve this equation, we need to first rewrite it in the standard form $ax^2 + bx + c = 0$ . We can do this by adding $58$ to both sides of the equation:

$x^2 - 6x + 58 = 0$

Now, we can see that the equation is in the standard form, with $a = 1$ , $b = -6$ , and $c = 58$ .

Substituting the Values of $a$ and $b$

To complete the solutions, we need to substitute the values of $a$ and $b$ into the quadratic formula. The quadratic formula is given by:

$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$

Substituting the values of $a = 1$ , $b = -6$ , and $c = 58$ , we get:

$x = \frac{-(-6) \pm \sqrt{(-6)^2 - 4(1)(58)}}{2(1)}$

Simplifying the expression, we get:

$x = \frac{6 \pm \sqrt{36 - 232}}{2}$

$x = \frac{6 \pm \sqrt{-196}}{2}$

$x = \frac{6 \pm 14i}{2}$

Simplifying the Solutions

The solutions of the quadratic equation are given by:

$x = \frac{6 \pm 14i}{2}$

Simplifying the expression, we get:

$x = 3 \pm 7i$

Conclusion

In this article, we solved the quadratic equation $x^2 - 6x = -58$ by substituting the values of $a$ and $b$ into the quadratic formula. We found that the solutions of the equation are $x = 3 \pm 7i$ . Quadratic equations are an essential concept in mathematics, and solving them requires a step-by-step approach. By following the steps outlined in this article, you can solve quadratic equations with ease.

Tips and Tricks

Always rewrite the quadratic equation in the standard form $ax^2 + bx + c = 0$ .
Substitute the values of $a$ and $b$ into the quadratic formula.
Simplify the expression to find the solutions.
Check your solutions by plugging them back into the original equation.

Real-World Applications

Quadratic equations have numerous real-world applications, including:

Physics: Quadratic equations are used to model the motion of objects under the influence of gravity.
Engineering: Quadratic equations are used to design bridges, buildings, and other structures.
Computer Science: Quadratic equations are used in algorithms for solving problems related to graph theory and network analysis.

Common Mistakes

Not rewriting the quadratic equation in the standard form: This can lead to incorrect solutions.
Not substituting the values of $a$ and $b$ into the quadratic formula: This can lead to incorrect solutions.
Not simplifying the expression: This can lead to incorrect solutions.

Conclusion

In conclusion, solving quadratic equations requires a step-by-step approach. By following the steps outlined in this article, you can solve quadratic equations with ease. Remember to always rewrite the quadratic equation in the standard form, substitute the values of $a$ and $b$ into the quadratic formula, and simplify the expression to find the solutions.

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Introduction

Quadratic equations are a fundamental concept in mathematics, and solving them is a crucial skill for students and professionals alike. In this article, we will provide a Q&A guide on quadratic equations, covering common questions and topics related to solving quadratic equations.

Q: What is a Quadratic Equation?

A: A quadratic equation is a polynomial equation of degree two, which means the highest power of the variable is two. The general form of a quadratic equation is $ax^2 + bx + c = 0$ , where $a$ , $b$ , and $c$ are constants, and $x$ is the variable.

Q: How Do I Solve a Quadratic Equation?

A: To solve a quadratic equation, you need to follow these steps:

Rewrite the quadratic equation in the standard form $ax^2 + bx + c = 0$ .
Substitute the values of $a$ and $b$ into the quadratic formula.
Simplify the expression to find the solutions.

Q: What is the Quadratic Formula?

A: The quadratic formula is given by:

$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$

Q: How Do I Use the Quadratic Formula?

A: To use the quadratic formula, you need to substitute the values of $a$ , $b$ , and $c$ into the formula. Then, simplify the expression to find the solutions.

Q: What are the Solutions of a Quadratic Equation?

A: The solutions of a quadratic equation are the values of $x$ that satisfy the equation. In other words, they are the values of $x$ that make the equation true.

Q: How Do I Check My Solutions?

A: To check your solutions, you need to plug them back into the original equation. If the solutions satisfy the equation, then they are correct.

Q: What are the Common Mistakes When Solving Quadratic Equations?

A: Some common mistakes when solving quadratic equations include:

Not rewriting the quadratic equation in the standard form.
Not substituting the values of $a$ and $b$ into the quadratic formula.
Not simplifying the expression.

Q: What are the Real-World Applications of Quadratic Equations?

A: Quadratic equations have numerous real-world applications, including:

Physics: Quadratic equations are used to model the motion of objects under the influence of gravity.
Engineering: Quadratic equations are used to design bridges, buildings, and other structures.
Computer Science: Quadratic equations are used in algorithms for solving problems related to graph theory and network analysis.

Q: How Do I Simplify the Expression in the Quadratic Formula?

A: To simplify the expression in the quadratic formula, you need to follow these steps:

Simplify the square root expression.
Simplify the fraction.
Combine like terms.

Q: What is the Difference Between a Quadratic Equation and a Linear Equation?

A: A quadratic equation is a polynomial equation of degree two, while a linear equation is a polynomial equation of degree one. In other words, a quadratic equation has a highest power of two, while a linear equation has a highest power of one.