Solving Quadratic Equations

The solutions of the quadratic equation

x² - x = 12 are

• x = 4 or x = -3

• x = -3 or x = -4

• x = 6 or x = 2

• x = 4 or x = 3

Solve by factoring: x² + x = 12

• 3, - 4

• -3, -4

• 3

• -3, 4

Tags

CCSS.HSA-REI.B.4B

Solve the equation by factoring:
x² -5x = 24

• x = ±√5
• x = -8 and 3
• x = 8 and -3
• No Real Solution

Tags

CCSS.HSA-REI.B.4B

What should you do first in solving this equation?
x² + 6x - 13 = 3

• Get factored form
• Write down: a=1, b=6, c=-13
• Make it equal 0 by subtracting 3 on each side
• Type it all in a calculator.

Solve 
 x² + 4x - 40 = -8

• -10 & -4
• -4 & 10
• -8 & 4
• 8 & -4

Solve

x² + 2x - 20 = 4

• x = -6, x = 4

• x = 6, x = -4

• x = 12, x = -2

• x = 8, x = -3

Tags

CCSS.HSA-REI.B.4B

Solve by factoring

x² + 10x = -25

• x = -5

• x = ±5

• x = 5

• x = 0

Tags

CCSS.HSA-REI.B.4B

Solve the quadratic

x² − 4x = 32

by factoring.

• x = − 8 and x = 4

• x = 8 and x = − 4

• x = 1 and x = 32

• no solution

Solve by factoring: x² - 7x + 12 = 0

• -4, -3

• 4, 3

• 4, -3

• -4, 3

Tags

CCSS.HSA-REI.B.4B

x² + 3x = 40

• 5 and -8

• 5

• -8

• -5 and -8