Solving Quadratic Equations by Extracting Square Roots

What is the square root of 196?

• + 11

• + 12

• + 13

• + 14

Tags

CCSS.8.EE.A.2

Which of the following square root is NOT a perfect square root ?

• $\sqrt{45}$

• $-\sqrt{400}$

• $\sqrt{0.09}$

• $\sqrt{\frac{9}{49}}$

How many solution does a quadratic equation x² - 9 = 16 have ?

• none

• 1

• 2

• 3

Tags

CCSS.HSA-REI.B.4B

What are the roots / solutions of the quadratic equation 3x² = 300 ?

• x = 10

• x = 9

• x = + 9

• x = + 10

Tags

CCSS.8.EE.A.2

What are the roots / solutions of the quadratic equation equation 2x² + 3 = 101 ?

• x = + 7

• x = + 8

• x = + 9

• x = + 10

Tags

CCSS.8.EE.A.2

What are the values of x does the quadratic equation (x - 2)² = 25 have ?

• x = 5 and x = 2

• x = 7 and x = -3

• x = 5 and x = -2

• x = 3 and x = -7

Tags

CCSS.HSA-REI.B.4B

What are the values of x does the quadratic equation 3(x - 2)² = 27 have?

• x = 7 and x = -1

• x = 1 and x = -7

• x = 5 and x = -1

• x = 1 and x = -5

Tags

CCSS.HSA-REI.B.4B