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Over [174]
3 years ago
12

What about this one ??

Mathematics
1 answer:
V125BC [204]3 years ago
4 0
The first expression is equivalent to B

The second expression is equivalent to A

The third expression is equivalent to C

You are basically adding like terms. For example for the first expression, it is 7x^2 + 2x^2, which equals 9x^2. Remember since you're adding, do not add the exponents.
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