add 8m^2 - 7n^2 and -8m^2 + 7n^2
Answers
Answered by
0
Answer:
0
Step-by-step explanation:
As one value is positive and the other value is negative, they strike off and the answer will remain 0.
Answered by
2
Answer:
(8m^2-7n^2)-(-8m^2+7n^2)
= 8m^2-7n^2-8m^2+7n^2
= 64m^2-49n^2-64m^2+49n^2
= 64m^2-64m^2-49n^2+49n^2
=0+0
= 0
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