Solving Quadratics Using the Square Root

Solve using the square root property.

• 11+9i

• 11-9i

• 9-11i

• 9+11i

• x = 12 and x = -12

• x = -12

• x = -12 and x = -12

• x = 8 and x = -8

• x = 16 and x = -6

• x = 4 and x = -6

• x = 5 and x = -9

• x = 3 and x = -6

• {49,-49}

• {8,-8}

• {7,-7}

• No Solution

x² = 16

• ± 4

• ± 8

• 4

• 8

3x² = 12

• ± 2

• 2

• ± √12

• ± 4

7x² + 1 = 8

• ± 1

• ± 7

• ± √7

• ± 8

(x + 1) ² = 25

• ± 5

• 4  or  -6

• -4  or  6

• ± 4

Solve by taking square roots:
k² - 6 = 43

• k = √37

• k = 37 or - 37

• k = 7, k = -7

• no solution

Solve by taking square roots:
5b² - 4 = 41

• b = 9, b = -9

• b = 3, b = -3

• b = 8, b = -8

• no solution