Solve Quadratics Review

Solve by factoring.

x² + 7x + 12 = 0

• ( x + 4 ) ( x + 3 )

• x = 4 and x = 3

• x = -12 / 7

• x = - 4 and x = - 3

Tags

CCSS.HSA-REI.B.4B

Solve by square roots

x² - 64 = 0

• 64

• 8

• 8 or -8

• 1 or -64

Solve by taking square roots:
k² - 6 = 43

• k = √37
• k = 37 or - 37
• k = 7, k = -7
• no solution

Tags

CCSS.HSA-REI.B.4B

Solve the equation (x + 3)² = 49.

• x = -7, 7
• x = 4, -10
• x = -4 +- √7
• x = 10, -4

Tags

CCSS.8.EE.A.2

Solve using the square root method: (x+2)² - 6= 30

• (6,0) (-6,0)

• (34,0) (-34,0)

• (9.47,0) (-1.47)

• (4,0) (-8,0)

Use the quadratic formula to find the solutions for

y = -x² - 5x + 12

• -4.9 and -0.1

• -8.54 and 8.54

• -0.45 and 3.55

• -6.77 and 1.77

Tags

CCSS.HSA-REI.B.4B

Solve using the Quadratic Formula:
x² + 4x + 3 = 0

• x = 1 and x = 3
• x = 6 and x = -2
• x = -1 and x = -3

Tags

CCSS.HSA-REI.B.4B

Solve using the quadratic formula.
2x² - 9x - 35 = 0

• x = 7/2, x = -6
• x = -5/2, x =5
• x = -3/7, x =6
• x = -5/2, x = 7

Tags

CCSS.HSA-REI.B.4B

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

• n = 4, -5
• n = -4, 5
• n  = -4, -5
• n  = 4, 5

Tags

CCSS.HSA-REI.B.4B

The discriminant is

• aX²  + bX  +  c
• b - 4ac
• b² - 4ac
• b² + 4ac

Tags

CCSS.HSA-REI.B.4B