Solving Quadratics Practice

Solve (What are the x intecepts?)

a² + 2a - 24 = 0

• a = -6, 4

• a = 6, -4

• a = 12, -2

• a = 8, -3

• -6, -2

• -2, 6

• 2, 6

• -6, 2

Solve by factoring.

z² - 18z + 81 = 0

• z = 9

• z = -9

• z = 9 or z = -9

What are the x intercepts to this equation? (x-3)(x+2)=0

• x=3,-2

• x=-3,2

• x=2,3

• x=3,2

Put the following equation into standard form

n²+8 = 6n

(Hint: what should the equation be equal to in order to solve?)

• n²+8 = 6n+0

• n²+8 +6n=0

• n²+8 -6n=0

• n²+6n+8=0

What should you do first in solving this equation?
x² + 6x - 13 = 3

• Get factored form
• Write down: a=1, b=6, c=-13
• Make it equal 0 by subtracting 3 on each side
• Type it all in a calculator.

Tags

CCSS.HSA-REI.B.4B

Use the graph to determine the x intercepts.

• -1 and -3

• 1 and -3

• 1 and 3

• -1 and 3

Solve:
x² - 49 = 0

• x = -7, x = 7
• x = -7
• x = 7
• x = -7, x = 1

Tags

CCSS.HSA-REI.B.4B

Name the zero(s)?

• 0
• 4 and 2
• 2
• 0 and 4

Tags

CCSS.HSF-IF.C.7C

Solve for the values of x:
(2x - 1)(x + 4) = 0

• { 1/2, -4 }
•  { 1/2, 4 }
• { 2, -4 }
• { -2, 4 }

Tags

CCSS.HSA-REI.B.4B