Answer:
3
r
2
+9
r
−
120
Step-by-step explanation:
Write the problem as a mathematical expression.
3
r
^2
+
9
r−
120
Factor 3 out of 3
r
^2
+
9
r
−
120
.
Factor 3 out of 3
r
^2
.
3
(
r
^2
)
+
9
r
−
120
Factor 3 out of 9
r
.
3
(
r^
2
)
+
3(
3
r
)
−
120
Factor 3 out of −
120
.
3
r
^2
+
3(
3
r
)
+
3
⋅
−
40
Factor 3 out of 3
r
2
+
3
(
3
r
)
.
3
(
r^2
+
3
r
)+
3
⋅
−
40
Factor 3 out of 3
(
r
2
+
3
r
)
+
3
⋅
−
40
.
3
(
r^
2
+
3
r
−
40
)
Factor.
Factor r^
2
+
3
r
−
40 using the AC method.
3
(
(
r
−
5
)
(
r
+
8
)
)
Remove unnecessary parentheses.
3
(
r
−
5
)
(
r
+
8
)
Hope this helps! :)
