Simplify.
\[
-7 a^{2}+10 a^{2}
\]

Answer

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Answer

Final Answer: \(\boxed{3a^{2}}\)

Steps

Step 1 ：Given the expression -7a^{2} + 10a^{2}

Step 2 ：Both terms are multiples of a^{2}, so they can be combined

Step 3 ：The operation to be performed is addition, but one of the terms is negative

Step 4 ：So, we will subtract the coefficients of the terms

Step 5 ：The result of adding the coefficients is 3

Step 6 ：This means that the simplified expression is 3a^{2}

Step 7 ：Final Answer: \(\boxed{3a^{2}}\)