Quadratic Square Root Method

Solve using square roots.

• ± 1/4

• ± 9/36

• ± 1/2

• No real solution

Solve using square roots.

• ±81

• ±9

• ±3

• No real solution

• {6.78,-6.78}

• {8,-8}

• {7,-7}

• No Solution

• {12.88,-12.88}

• {13.22,-13.22}

• {16}

• No Solution

Solve using square roots.

• √3

• ±√3

• -3

• No real solution

Solve using square roots.
5b² - 4 = 41

• b = 9, b = -9

• b = 3, b = -3

• b = 8, b = -8

• no solution

Solve
(x+3)²-5 = 9

• ±√14 -3

• √14 - 3

• ±11

• ±5

Solve

x² + 2x - 20 = 4

• x = -6, x = 4

• x = 6, x = -4

• x = 12, x = -2

• x = 8, x = -3

Solve:
x² - 49 = 0

• x = -7, x = 7

• x = -7

• x = 7

• x = -7, x = 1

Solve by taking square roots:
5m² + 1 = 6

• m = 0

• m = 1 or -1

• m = √7

• m = 7/5 m = -7/5