Solve Quadratics by Factoring and Quadratic Formula

Solve for x. Round to the nearest hundredth if necessary.

3x² = 16x + 12

• x = -0.67 and x = 6

• x = -6 and x = 0.67

• x = 3.33 and x = 18

• x = -3.33 and x = 18

Tags

CCSS.HSA-REI.B.4B

Solve for x. Round to the nearest hundredth if necessary.

2x² = -x + 3

• x = -1 and x = 1.5

• x = 1.5 and x = -1

• x = 1 and x = 1.5

• x = -1.5 and x = 1

Tags

CCSS.HSA-REI.B.4B

Solve Using the Quadratic Formula

x² + 4x - 40 = -8

• x = -10 and x = -4

• x = -4 and x = 10

• x = -8 and x = 4

• x = 8 and x = -4

Tags

CCSS.HSA-REI.B.4B

Solve using the quadratic formula.

2x² - 9x - 35 = 0

• x = 7/2 and x = -6

• x = -5/2 and x =5

• x = -3/7 and x =6

• x = -5/2 and x = 7

Tags

CCSS.HSA-REI.B.4B

Use the quadratic formula to solve: n² = 9n - 20

• n = 4 and n = -5

• n = -4 and n = 5

• n = -4 and n = -5

• n = 4 and n = 5

Tags

CCSS.HSA-REI.B.4B

• x = 2 and x = 3

• x = -2 and x = -3

• x = 2 and x = -3

• x = -2 and x = 3

Tags

CCSS.HSA-REI.B.4B

What mathematical process did they use?

• Quadratic Formula

• Completing the Square

• Factoring

• Differentiation

Tags

CCSS.HSA-REI.B.4B

• A
• B
• C
• D

Tags

CCSS.HSA-REI.B.4B

Solve using the quadratic formula:
4x² + 4x + 1 = 0

• x = -½

• x = -2

• x = 0

Tags

CCSS.HSA-REI.B.4B

What is this formula?

• Pythagorean Formula

• Quadratic Formula

• Distance Formula

• Correlation Formula

Tags

CCSS.HSA-REI.B.4B