Solving Quadratic Equations

ax²+bx+c=0  is the standard form of a quadratic equation.

• True
• False

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4

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.A.1

CCSS.HSA.REI.B.4

Solve the following quadratic equation...

x² + 4x - 32 = 0

• x = 8

  x = -4

• x = -8

  x = 4

• x = -2

  x = 16

• x = 2

  x = -16

Tags

CCSS.HSA.REI.B.4

Solve the quadratic equation.

• ±81

• ±9

• ±3

• No real solution

What are the solutions to this function?

• -4, 2

• -2, 4

• -16

• -4

What are the roots of this function?

• ± 1

• ± 4/3

• ± 3/4

• No real solution

Solve for the values of x:
(x - 3)(x + 6) = 0

• { -3, -6 }
• { 3, -6 }
• { -3, -6 }
• { 3, 6 }

Tags

CCSS.HSA-REI.B.4B

What is another way to say "where a function crosses the x-axis"?

• x-intercept

• zero

• root

• all of these.

• solution

Tags

CCSS.HSA.APR.B.3

Name the zeros of the quadratic function.

• (0, 0)

• (2, 4)

• (0, 0) and (0, 4)

• (0, 0) and (4, 0)

What are the zeros of the function?

• 0 and 8

• -2 and -4

• 3 and -1

• 2 and 4