Square Roots vs Factoring

Solve by factoring: x² - 9x + 20 = 0

• x = -4 and x = -5

• x = 20 and x = -9

• x = 4 and x = 5

• x = -4 and x = 5

Solve.
n² - 2n = 0

• n = 2 and 0

• n = -2 and 0

• n = 2

• n = 0

Solve by taking the square root:

x² = 49

• -7

• 7

• 49

• ±7

Simplify the square root.

• A

• B

• C

• D

What is the square root of 100?

• 10

• 200

• 50

• 1000

Solve using square roots.

• ±81

• ±9

• ±3

• No real solution

Determine which is square root of 144

• 11

• 10

• 12

• 14

Simplify the square root.

• A

• B

• C

• D

What is the square root of 81?

• 3

• 162

• 6561

• 9

√28

• 7√2

• 7√4

• 4√7

• 2√7