Solving Quadratic Equations Using Square Root Method

7x² + 1 = 8

• ± 1

• ± 7

• ± √7

• ± 8

Solve using square roots.
5b² - 4 = 41

• b = 9, b = -9

• b = 3, b = -3

• b = 8, b = -8

• no solution

What are the solutions?

• 0 and 8

• -2 and -4

• 3 and -1

• 2 and 4

Solve
(x+3)²-5 = 9

• ±√14 -3

• √14 - 3

• ±11

• ±5

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

Solve.

(2x - 4)² = 16

• x = 4

• x = 10

• x = -2

• x = 0, 4

Solve the following quadratic equation:

(x+6)² = -21

• x = -6 ± √21

• x = -6 ± 7i

• x = -6 ± 21

• x = -6 ± √21 ⋅ i

Solve the following quadratic equation:

(x+5)² = -100

• x = -5 ± 10i

• x = 5 ± 10i

• x = -5 ± 100i

• x = 5 ± 100i

Solve the following quadratic equation:

4x² + 1 = -99

• x = ± 3i

• x = ± 10

• x = 0 and x = 1

• x = ± 5i