Substitute into Quadratic Formula

Rohan, Arjun, and Ava are on a mission to solve a mysterious quadratic equation that they found in their math textbook. Can you help them figure out the steps using the quadratic formula?

• The steps to solve a quadratic equation using the quadratic formula are: Write down the quadratic equation. Identify the values of x, y, and z. Substitute the values into the quadratic formula. Simplify the equation. Solve for x.

• The steps to solve a quadratic equation using the quadratic formula are: Write down the quadratic equation. Identify the values of p, q, and r. Substitute the values into the quadratic formula. Simplify the equation. Solve for x.

• The steps to solve a quadratic equation using the quadratic formula are: Write down the quadratic equation. Identify the values of a, b, and c. Substitute the values into the quadratic formula. Simplify the equation. Solve for x.

• The steps to solve a quadratic equation using the quadratic formula are: Write down the quadratic equation. Identify the values of m, n, and o. Substitute the values into the quadratic formula. Simplify the equation. Solve for x.

Answer explanation

The steps to solve a quadratic equation using the quadratic formula are: 1. Write down the quadratic equation. 2. Identify the values of a, b, and c. 3. Substitute the values into the quadratic formula. 4. Simplify the equation. 5. Solve for x.

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Solve Using the Quadratic Formula
 x² + 4x - 40 = -8

• -10 & -4

• -4 & 10

• -8 & 4

• 8 & -4

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What is the quadratic formula used for?

• The quadratic formula is used to calculate the area of a circle.

• The quadratic formula is used to find the sum of two numbers.

• The quadratic formula is used to solve quadratic equations.

• The quadratic formula is used to determine the volume of a cube.

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Put the steps for using the Quadratic Formula in the correct order.

• Identify a, b, and c.

• Make sure the equation is set equal to 0 and written in standard form.

• Simplify under the radical

• Substitute a, b, and c into the formula.

• Solve the baby equations

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Fill in the formula =​ = ​ = ​

• -6

• 1

• -40

• -1

• 6

• 40

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Use the quadratic formula to solve 2x² + 2x - 12.

Enter only the larger of the two solutions!

Mathematical Equivalence

OFF

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The Quadratic Formula can be used to solve quadratic equations that cannot be factored.

• True

• False

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