Quadratics by Quadratics

What is another word for zeros?

• y-intercepts

• roots

• vertex

• axis of symmetry

Tags

CCSS.HSF-IF.C.7C

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

Solve
4m² - 100 = 0

• m=25, -25

• m=96

• m=5, -5

• m=-96

Tags

CCSS.8.EE.A.2

What is the first step to solving THIS equation by completing the square?
a² + 10a + 21 = 0

• Set the equation equal to zero

• Divide 10 by 2 and add the result to both sides

• Add a² and 10a together

• Subtract the 21

Tags

CCSS.HSA-REI.B.4B

Solve by completing the square:
x² + 6x = 55

• x = -14, 2

• x = 14, -2

• x = -5, 11

• x = 5, -11

Tags

CCSS.HSA-REI.B.4B

Solve
2x² + 17x + 21 = 0

• x= ^-21/₂, -17

• x= ²/₃, 16

• x=-7, ^-3/₂

• x=15, -³/₇

Tags

CCSS.HSA-REI.B.4B

What are the roots of the function
f(x)= (x - 2)(x + 3)?

• x = - 2 or x = 3

• x = 2 or x = -3

• The are no real roots

• x = 2 or x = 3

Tags

CCSS.HSF-IF.C.7C

Solve by completing the square. Round if needed.
x² -4x -5= 0

• 11 and -7

• 1 and 3

• 1.73 and -1.73

• 5 and -1

Tags

CCSS.HSA-REI.B.4B

Does this parabola have a maximum or minimum?

• Maximum

• Minimum

Tags

CCSS.HSF-IF.C.7A

What is another name for the x-intercepts of a quadratic?

• y-intercepts

• zeros

• x-axis

• none of these

Tags

CCSS.HSF-IF.C.7D