Solving Quadratics Using the Square Method

12. Solve using any method.

(x - 2 )² -49 = 0

• 5, 9

• ^{-9, -5}

• 9, -5

• ^{9, -9}

Tags

CCSS.HSA-REI.B.4B

Tags

CCSS.HSA-REI.B.4B

Solve for x.

x² - 13 = 12

• x = ± 25

• x = ± 5

• x = ± -1

• x = ± 1

Tags

CCSS.8.EE.A.2

Solve:
x² - 49 = 0

• x = -7, x = 7

• x = -7

• x = 7

• x = -7, x = 1

Tags

CCSS.8.EE.A.2

• No solution

Tags

CCSS.HSA-REI.B.4B

Solve for x.  Round to the nearest hundredth if necessary.
3x² = 27

• x = 9

• x = 3

• x = -3, 3

• x = x = -9, 9

Tags

CCSS.8.EE.A.2

• subtract 12

• add and subtract

• vertex form

• add 16

• apply square roots

• add

• subtract

• standard form

• subtract 16

Tags

CCSS.HSA-REI.B.4B

• x = 9 or x = -9

• no solutions

• x = 2 or x = -2

• x = 81 or x = -81

Tags

CCSS.HSA-REI.B.4B

When factoring
x² - 4x + 4 = 20,
what goes in the blank?
(x - __ )² = 20

• 4

• 2

• 8

• 20

Tags

CCSS.HSA-REI.B.4B

Solve     (x + 2)^2 - 8 = 25

• -7.7 or 3.7

• -8.7 or 3.7

• -8 or 3

• -3.7 or 7.7

Tags

CCSS.HSA-REI.B.4B