Answer:
perimeter =
8
x
+
4
Explanation:
the perimeter of a rectangle is ∙ perimeter =
2
l
+
2
w
where l is the length and w the width
here
l=
3
x
−
2
and
w
=
x
+
4
⇒
perimeter =
2
(
3
x
−
2
)
+
2
(
x
+
4
)
←
distribute
⇒
perimeter =
6
x
-4
+
2+8
←
collect like terms
⇒
perimeter =
8
x
+
4
Step-by-step explanation:
