Quadratic Equations Review

The solutions of the quadratic equation
x²-5x+6=0 are

• x=1 or x=-6
• x=3 or x=2
• x=-3 or x= 2
• x=-1 or x=6

Tags

CCSS.HSA-REI.B.4B

In the quadratic formula, if b²-4ac>0, then the quadratic equation has

• two imaginary solutions
• two different real solutions
• two equal real solutions
• none of these

Tags

CCSS.HSA-REI.B.4B

To complete the perfect square trinomial in the expression x²-22x+_____, we need to add

• 11
• 44
• 121
• 144

Tags

CCSS.HSA-REI.B.4B

In the quadratic formula, the expression
b²-4ac is called

• discrim
• determinant
• discriminant
• none of these

Tags

CCSS.HSA-REI.B.4B

If 3+2i is one solution of a quadratic equation, then the other solution of this quadratic equation is

• 2-3i

• 3+2i

• 1/3 -1/2i

• 3-2i

Tags

CCSS.HSN.CN.C.7

CCSS.HSN.CN.C.9

One solution of the quadratic equation
x²-7x+12=0 is

• x=3
• x=2
• x=-3
• x=-2

Tags

CCSS.HSA-REI.B.4B

Fill the blank spaces to complete the perfect square trinomial

x²-18x+____=(x- ____)²

• 9 and 3 respectively

• 81 and 9 respectively

• -9 and -3 respectively

• -81 and -9 respectively

Tags

CCSS.HSA-REI.B.4B

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

Solve by factoring: x² = 7x + 18

• -7 and -18

• 9 and 2

• 9 and -2

• 2 and 7

Tags

CCSS.HSA-REI.B.4B

What is this formula?

• This is the speed of light formula.
• This is the quadratic formula.
• This is the zero product property.
• This is scary.

Tags

CCSS.HSA-REI.B.4B