Mathematics, 07.05.2020 02:00 martinbricein10
Brianna’s teacher asks her which of these three expressions are equivalent to each other.
Expression A:
9
x
−
3
x
−
4
Expression B:
12
x
−
4
Expression C:
5
x
+
x
−
4
Brianna says that all three expressions are equivalent because the value of each one is
−
4
when
x
=
0
.
Brianna’s thinking is incorrect.
Answers: 3
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