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2 answers:
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Answer: A) -9
Step-by-step explanation:
If x = -2
Then =
So, it is -9
An equation has infinitely many solutions if it can be manipulated all the way to an identity (i.e. an equality where the right and left hand side are the same). We have:
A)
which is impossible
B)
which is an equality
C)
which has a unique solution
D)
which has a unique solution