1.x(x-y)^2(a-b)-(y-x)^3(b-a) 2.(-2)^2001+2^2002

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1.x(x-y)^2(a-b)-(y-x)^3(b-a) 2.(-2)^2001+2^2002
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1.x(x-y)^2(a-b)-(y-x)^3(b-a) 2.(-2)^2001+2^2002
1.x(x-y)^2(a-b)-(y-x)^3(b-a) 2.(-2)^2001+2^2002

1.x(x-y)^2(a-b)-(y-x)^3(b-a) 2.(-2)^2001+2^2002
1.x(x-y)² (a-b)-(y-x)³(b-a)
=x(x-y)² (a-b)-(x-y)³(a-b)
=(x-y)² (a-b)(x-x+y)
=y(x-y)² (a-b)
2.(-2)^2001+2^2002
=-2^2001+2*2^2001
=2^2001

x(x-y)^2(a-b)-(y-x)^3(b-a)
=x(x-y)^2(a-b)-(x-y)^3(a-b)
=(x-y)^2(a-b)[x-(x-y)]
=y(x-y)^2(a-b)
.(-2)^2001+2^2002
=.-2^2001+2*2^2001
=(-1+2)*2^2001
=2^2001