extracting squareroots

Solve by taking the square root:

x² = 49

• -7

• 7

• -7,7

• 49

What is another word for zeros?

• y intercepts

• roots

• vertex

• axis of symmetry

TRUE OR FALSE:

The solutions, roots, x-intercepts, and zeros of a quadratic equation are all the same thing.

• True

• False, because the solution and root are the same but the x-intercept and zero are different

• False, because the x-intercept and root are the same but the zero and solution are different

• False, they are all different

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 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

1What are the roots / solutions of the quadratic equation (x+ 1)² = 50?

•  $x\ =\ -1\pm2\sqrt{25}$ 

•  $x\ =\ 1\pm2\sqrt{25}$ 

•  $x\ =1\pm\ 5\sqrt{2}$ 

•  $x\ =\ -1\pm5\sqrt{2}$ 

Tags

CCSS.HSA-REI.B.4B