(m-1)的5次方÷(1-x)²=

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(m-1)的5次方÷(1-x)²=

(x-1)^5÷(1-x)²
=(x-1)^5÷(x-1)²
=(x-1)³
(m-1)^5÷(1-m)²
=(m-1)^5÷(m-1)²
=(m-1)³

(x-1)的5次方÷(1-x)²=(x-1)的5次方÷(x-1)²=(x-1)³