(x-y)^5除以(y-x)^3等于几
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(x-y)^5除以(y-x)^3等于几
(x-y)^5除以(y-x)^3等于几
(x-y)^5除以(y-x)^3等于几
= [-(y-x)]^5÷(y-x)^3
= --(y-x)^5÷(y-x)^3
= -(y-x)^(5-3)
= -(y-x)²
(x-y)^5除以(y-x)^3等于几
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