2(a-b)的5次方÷(b-a)的4次方+(-a-b)的3次方÷(a+b)눀

2025-01-02 04:56:15
推荐回答(3个)
回答1:

2(a-b)的5次方÷(b-a)的4次方+(-a-b)的3次方÷(a+b)²
=2(a-b)的5次方÷(a-b)的4次方-(a+b)的3次方÷(a+b)²
=2(a-b)-(a+b)
=2a-2b-a-b
=a-3b

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回答2:

=2(a-b)的5次方÷(a-b)的4次方-(a+b)的3次方÷(a+b)²
=2(a-b)-(a+b)
=2a-2b-a-b
=a-3b

回答3:

2(a-b)^5÷(b-a)^4+(-a-b)^3÷(a+b)²
=2(a-b)^5÷(a-b)^4-(a+b)^3÷(a+b)²
=2(a-b)^(5-4)-(a+b)^(3-2)
=2(a-b)-(a+b)
=2a-2b-a-b
=a-3b