Which is a solution to (x - 3)(x + 9) = -27?
2 answers:
Answer:
x=0
Step-by-step explanation:
x^2+6x-27=-27
x^2+6x=0
x(x+6)
x=0, x=-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
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