Solving Quadratic Square Roots

7x² + 1 = 8

• ± 1

• ± 7

• ± √7

• ± 8

Solve by taking square roots:
3 + 9r² = 12

• r = 0

• no solution

• r = 3, r = -3

• r = 1, r = -1

Solve
(x-5)² = 25

• ±0

• ±10

• 10, 0

• -10, 0

Solve
(x+3)²-5 = 9

• ±√14 -3

• √14 - 3

• ±11

• ±5

Solve by factoring
(x - 2 )² = 49

• -5, 9

• ^{7, -7}

• 9, -5

• ^{9, -9}

What are the solutions?

• 0 and 8

• -2 and -4

• 3 and -1

• 2 and 4

Solve x²− 4 = 0

•  2 and -2

• 4 and -4

• 16 and -16

• 8 and -8

Solve using square roots.

• A

• B

• C

• D

2x²=100

• x = √25

• x = ±5√2

• x = √100

• x = ±√5

Solve using square roots.

• A

• B

• C

• D