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Quadratic Formula - Rose
Contributed by: Rose
(Original author: Tsygan)

Many trinomials can be factored with

integer solutions (roots).

Please choose the correct factored form.
x2 + 8x + 7  = 0

(x + 7) (x - 1)

(x + 7) (x + 1)

(x - 7) (x - 1)

   Some trinomials like x2 + 8x + 5 = 0

                        do not factor.

When this happens, use the QUADRATIC FORMULA:
Quadratic Formula:
a =          b =         c =

x2 + 15x + 26 = 0

Fill in the blanks

a =

b =

c =

Plug the a,b, and c values into the quadratic formula:
-

1

15

26

x2 + 15x + 26 = 0

2

Quadratic

Formula:

*
2
-
4
*
*
Quadratic Formula:
a =          b =         c =

4x2 - 15x + 2 = 0

Fill in the blanks

a =

b =

c =

Plug the a,b, and c values into the quadratic formula:
-

4

-15

2

4x2 - 15x + 2 = 0

2

Quadratic

Formula:

*
2
-
4
*
*
Quadratic Formula:
a =          b =         c =

x2 + 2 = 0

Fill in the blanks

a =

b =

c =

Plug the a,b, and c values into the quadratic formula:
-

1

0

2

x2 + 2 = 0

2

Quadratic

Formula:

*
2
-
4
*
*
Quadratic Formula:
a =          b =         c =

7x- 2x  = 0

Fill in the blanks

a =

b =

c =

Plug the a,b, and c values into the quadratic formula:
-

7

-2

0

7x- 2x  = 0

2

Quadratic

Formula:

*
2
-
4
*
*
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