simplyfy (8m-7n)^2+(8m+7n)^2
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Answer:
128m^2 + 98n^2
Step-by-step explanation:
( 8m - 7n)^2 + ( 8m +7n )^2
= 64m^2 -112 mn +49 n^2 + 64m^2 +112mn + 64n^2
= 64m^2 +64m^2 + 49n^2 + 49n^2
= 128 m^2 + 98n^2
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