Solving Quadratics by Taking Square Roots

Solve by factoring:
x² - 7x - 30 = 0

• 3, 10
• -3, 10
• -3, -10
• 3, -10

Solve by factoring:
x² + 12x + 32 = 0

• 4, 8
• -4, 8
• -4, -8
• 4, -8

Solve by factoring:
(3x + 7)(2x - 5) = 0

• 7/3, 5/2
• -7/3, 5/2
• -7/3, -5/2
• 7/3, -5/2

Tags

CCSS.HSA-REI.B.4B

Solve by factoring:
2x(x - 8) = 0

• 0, 8
• 0, -8
• -2, 8
• -2, -8

Tags

CCSS.HSA-REI.B.4B

Solve by factoring:
x² - 16 = 0

• 4
• -4
• -4, 4
• 16

Tags

CCSS.8.EE.A.2

Solve by taking the square root:
x² = 49

• -7
• 7
• 49
• -7, 7

Tags

CCSS.HSA-REI.B.4B

Solve by taking the square root:
4x² = 100

• -10, 10
• -25, 25
• -5, 5
• 5

Tags

CCSS.8.EE.A.2

x² = 8

• x = ±4
• x = ±2√2
• x = ±4√2
• x = ±√4

Tags

CCSS.8.EE.A.2

2x²=100

• x = √25
• x = ±5√2
• x = √100
• x = ±√5

Tags

CCSS.8.EE.A.2

2x²= 30

• x= √5
• x= √30
• x= √15
• x= ±5

Tags

CCSS.8.EE.A.2