Substitute Values 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.

Tags

CCSS.HSA-REI.B.4B

e

d

c

b

a

-2

(-2)

(-11)

-15

-11

Tags

CCSS.HSA-REI.B.4B

tip: values without ( ) go into the formula first, values with ( ) go in second.Drag and drop the values of a, b, and c into the quadratic formula for:

e

d

c

b

a

0

27

(27)

(0)

-8

Tags

CCSS.HSA-REI.B.4B

tip: values without ( ) go into the formula first, values with ( ) go in second.Drag and drop the values of a, b, and c into the quadratic formula for:

e

d

c

b

a

(7)

-9

7

6

(-9)

Tags

CCSS.HSA-REI.B.4B

Tags

CCSS.HSA-REI.B.4B

Fill in the formula x^2-6x-40=0 ​ BLUE=​ (a)   RED= ​ (b)   GREEN= ​ (c)  

• -6

• 1

• -40

• -1

• 6

• 40

Tags

CCSS.HSA-REI.B.4B

• -6

• 1

• -40

• -1

• 6

• 40

Tags

CCSS.HSA-REI.B.4B

Fill in the formula =​ = ​ = ​

• -6

• 1

• -40

• -1

• 6

• 40

Tags

CCSS.HSA-REI.B.4B

Pepito, Juanito, Mario, and Pedro are all trying to solve the quadratic equation by using the quadratic formula.
Which one  plugs in the values of a, b, and c correctly into the formula?

Tags

CCSS.HSA-REI.B.4B

Given the Quadratic Equation: 2x² + 5x + 3 = 0. Identify the values to use in the Quadratic Formula.

• 2

• 5

• 3

Tags

CCSS.HSA-REI.B.4B