Solving Quadratics by taking square roots, complex solutions

Solve for x.

16x² - 9 = 0

• x = 1.333

• x = ± (4/3)

• x = ± (3/4)

• x = (9/16)

Solve for x.

x² - 13 = 12

• x = ± 25

• x = ± 5

• x = ± -1

• x = ± 1

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.4

Solve for x.

5(x - 3)² + 1 = 81

• x = -1, 7

• x = -7, 1

• x = ± 9

• x = 3, 10

Tags

CCSS.HSA-REI.B.4B

Solve for x.

(x - 7)² + 4 = 40

• x = -1, -13

• x = 1, 7

• x = -1, -7

• x = 1, 13

• x = -7, -13

Tags

CCSS.8.EE.A.2

Solve for x.

(x - 4)² + 8 = 33

• x = -9, 1

• x = -1, 9

• x = 1, 9

• x = 3, 11

• x = -11, -3

Tags

CCSS.HSA-REI.B.4B

Solve for x.

-7x² + 92 = 8

• x = ± 2√3

• x = ± 3√2

• x = ± 2√21

• x = ± 2√7

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4

Solve for x.

2(x + 5)² = 28

• x = 5 ± √14

• x = -5 ± 2√7

• x = -5 ± √14

• x = 5 ± 2√7

Tags

CCSS.HSA-REI.B.4B

Solve for x.

-7(x + 3)² + 63 = 0

• x = 0, 6

• x = -6, 12

• x = -6, 0

• x = 6, 12

Tags

CCSS.HSA-REI.B.4B

Solve for x.

-2(x + 6)² + 13 = -85

• x = 1, 13

• x = -13, 1

• x = -6, 7

• x = -7, 6

Tags

CCSS.HSA-REI.B.4B

x2 = -164

•  $\pm2i\sqrt{41}$ 

•  $\pm2\sqrt{41}$  

•  $\pm41i\sqrt{2}$ 

•  $\pm41\sqrt{2}$