(x+y)的5次方(-x-y)的6次方=？
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(x+y)^5(-x-y)^6
=(x+y)^5(x+y)^6
=(x+y)^(5+6)
=(x+y)^11
-(x-y)^2*(y-x)^3
=-(x-y)^2*[-(x-y)]^3
=(x-y)^2(x-y)^3
=(x-y)^(2+3)
=(x-y)^5
25*5^m*5^(m-2)
=5^2*5^m*5^(m-2)
=5^(2+m+m-2)
=5^2m
=(x+y)^5(x+y)^6
=(x+y)^(5+6)
=(x+y)^11
-(x-y)^2*(y-x)^3
=-(x-y)^2*[-(x-y)]^3
=(x-y)^2(x-y)^3
=(x-y)^(2+3)
=(x-y)^5
25*5^m*5^(m-2)
=5^2*5^m*5^(m-2)
=5^(2+m+m-2)
=5^2m
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