作业帮(a²-b²)÷(a-b) (a²+2ab+b²）²÷（-a-b）³①(a²-b²)÷(a-b) ②(a²+2ab+b²）²÷（-a-b）³
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(a²-b²)÷(a-b) (a²+2ab+b²）²÷（-a-b）³①(a²-b²)÷(a-b) ②(a²+2ab+b²）²÷（-a-b）³
(a²-b²)÷(a-b) (a²+2ab+b²）²÷（-a-b）³
①(a²-b²)÷(a-b)
②(a²+2ab+b²）²÷（-a-b）³
(a²-b²)÷(a-b) (a²+2ab+b²）²÷（-a-b）³①(a²-b²)÷(a-b) ②(a²+2ab+b²）²÷（-a-b）³
解析
①(a²-b²)÷(a-b)
=（a+b)（a-b)÷（a-b)
=a+b
②(a²+2ab+b²）²÷（-a-b）³
=(a+b)^4/[-(a+b)]^3
= -（a+b）
=-a-b