Solving Quadratics by Graphing & Square Roots Review

Solve using square roots.

• A
• B
• C
• D

Tags

CCSS.HSA.REI.A.2

CCSS.HSA.REI.B.4

Solve using square roots.

• A
• B
• C
• D

Tags

CCSS.HSA.REI.A.2

CCSS.HSA.REI.B.4

Solve.

x² - 4 = 76

• No Real Number Solution

• x = ±4√5

• x = ±80

• x = ±5√4

Solve.

3x² = -60

• No Real Number Solution

• x= √20

• x= √60

• x= ±√30

Tags

CCSS.HSA.REI.B.4

Find the roots of the function using square roots.

x² - 10 = -10

• x= 0

• No Real Number Solution

• x = ±5

• x = 2, 5

What are the zeros of the function? Use the square root method to solve.

(x-5)² = 25

• ±0

• ±10

• {10, 0}

• {-10, 0}

Solve.

(x+3)²-5 = 9

• ±√14 -3

• √14 - 3

• ±11

• ±5

Solve for x:

(x+6)²=49

• x=7, x=12

• x=±7

• x=1, x=-13

• x=43, x=-55

What are the solutions to 2(x−7)² = 32 ?

• x = 7±√32

• x = ±√65

• x = 3 and x = 11

• x = -1 and x = 15

Solve the following quadratic function.

x² = 8

• x = ±4

• x = ±2√2

• x = ±4√2

• x = ±√4