[(x-y)²]³·(x-y)·[(x-y)³]的四次方

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[(x-y)²]³·(x-y)·[(x-y)³]的四次方[(x-y)²]³·(x-y)·[(x-y)³]的四次方[(x-y)²]&

[(x-y)²]³·(x-y)·[(x-y)³]的四次方
[(x-y)²]³·(x-y)·[(x-y)³]的四次方

[(x-y)²]³·(x-y)·[(x-y)³]的四次方
[(x-y)^6*(x-y)*(x-y)^3]^4
=[(x-y)^10]^4
=(x-y)^40

[(x-y)^2]^3.(x-y).[(x-x)^3]^4=(x-y)^6.(x-y).(x-y)^12.
原式=(x-y)^(6+1+12).
=(x-y)^19.