Trisha tried to write an expression that is equivalent to . Here is her work:
3
(
5
x
+
2
)
–
(
25
x
+
10
)
3
(
5
x
+
2
)
–
(
25
x
+
10
)
=
Step 1
3
(
5
x
+
2
)
–
5
(
5
x
+
2
)
Step 1
=
Step 2
(
3
–
5
)
(
5
x
+
2
)
Step 2
=
Step 3
–
(
5
x
+
2
)
Step 3
Is Trisha's work correct?
No, Trisha made a mistake in Step 1. Trisha factored a 5 from so the expression should say .
(
25
x
+
10
)
3
(
5
x
+
2
)
+
5
(
5
x
+
2
)
No, Trisha made a mistake in Step 2. Trisha should have multiplied by itself to get .
(
5
x
+
2
)
(
5
x
+
2
)
2
Yes, Trisha's work is correct.
ref_doc_title.
Jumping to level 1 of 1
Excellent!
Now entering the Challenge Zone—are you ready?




