Solving Quadratic Equations by Taking Square Root

Solve the quadratic equation by taking the square roots. Allow for imaginary solutions.

Tags

CCSS.HSA-REI.B.4B

Solve:
x² - 49 = 0

• x = -7, x = 7

• x = -7

• x = 7

• x = -7, x = 1

Tags

CCSS.8.EE.A.2

x² = 8

• x = ±4

• x = ±2√2

• x = ±4√2

• x = ±√4

Tags

CCSS.8.EE.A.2

Solve by taking the square root:
x² = 49

• -7

• 7

• 49

• -7, 7

Tags

CCSS.HSA-REI.B.4B

Solve using square roots.

• A

• B

• C

• D

Tags

CCSS.8.EE.A.2

Solve by taking the square root:
4x² = 100

• -10, 10

• -25, 25

• -5, 5

• 5

Tags

CCSS.HSA-REI.B.4B

x² -4 = 77

• 9

• -9

• No Real Solutions

• 9, -9

Tags

CCSS.8.EE.A.2

Solve.

4x² - 7 = -10

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

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

• r = 0

• no solution

• r = 3, r = -3

• r = 1, r = -1

Tags

CCSS.8.EE.A.2