Which is a solution to (x - 3) (x + 9) = - 27?

х=-9 x = - 3

х = 0

х = 6

x

2

+9x-3x-27=-27

2 Simplify

x

2

+

9

x

-

3

x

-

2

7

{x}^{2}+9x-3x-27

x

2

+9x-3x-27 to

x

2

+

6

x

-

2

7

{x}^{2}+6x-27

x

2

+6x-27.

x

2

+

6

x

-

2

7

=

-

2

7

{x}^{2}+6x-27=-27

x

2

+6x-27=-27

3 Cancel

-

2

7

-27

-27 on both sides.

x

2

+

6

x

=

0

{x}^{2}+6x=0

x

2

+6x=0

4 Factor out the common term

x

x

x.

x

(

x

+

6

)

=

0

x (x+6) = 0

x (x+6) = 0

5

How?

Solve for

x

x

x.

x

=

0

,

-

6

x=0,-6

x=0,-6