Solving a Quadratic by Square Root

Solve using square roots.

• A

• B

• C

• D

Solve for x.

x² = 36

• x = ± 6

• x = ± 18

• x = 6

• x = 18

Solve for x.

-7(x + 3)² + 63 = 0

• x = 0, 6

• x = -6, 12

• x = -6, 0

• x = 6, 12

Which method is MOST EFFICIENT to solve:
8x²  -  6  = 0

• Square Root Method

• Greatest Common Factor (GCF)

• Complete the Square

• Quadratic Formula

Solve using square roots.

• ± 1/4

• ± 9/36

• ± 1/2

• No real solution

• x= 9, -9

• x= -49, 49

• x= 7, -7

• x= -5, 5

x²=25

• x = 5

• x = -5

• x = ±25

• x = ±5

Solve the equation using square roots.
x² = 121

• 60.5

• ± 11

• ± 12

• 11

• A
• B
• C
• D

• x = 3, -3

• x = 3i, -3i

• x = -7, 7

• No Soluition