MAT099: Quadratics #2

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

• 4

• 2

• 8

• 20

Tags

CCSS.HSA-REI.B.4B

Complete the Square
x² + 6x = 5

• (x + 3)² = 5

• (x + 6)² = 9

• (x + 3)² = 14

• (x + 6)² = 14

Tags

CCSS.HSA-REI.B.4B

Find the value of C

x²+5x+c

• 10

• 25

• 25/2

• 25/4

Complete the Square and solve the equation.
m² + 12m + 19 = 0

• - 6 ± √ - 19

• 6 ± √ 19

• - 23, - 11

• - 6 ± √ 17

What do you do to the b value to correctly complete the square?

• square it

• divide it by 2 and square the result

• divide it by 2 and take the square root of the result

• divide it by 2 only

Tags

CCSS.HSA-REI.B.4B

3x² = 12

• ± 2

• 2

• ± √12

• ± 4

Tags

CCSS.8.EE.A.2

7x² + 1 = 8

• ± 1

• ± 7

• ± √7

• ± 8

(x - 2) ² = 9

• ± 3

• 5  or  -1

• -5  or  1

• ± 9

Tags

CCSS.HSA-REI.B.4B

(x + 1) ² = 25

• ± 5

• 4  or  -6

• -4  or  6

• ± 4

Solve for the unknown x.

(x-5)² = 25

• ±0

• ±10

• 10, 0

• -10, 0