[(x-y)^2+(x+y)^2]乘(x^2-y^2)解答过程

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[(x-y)^2+(x+y)^2]乘(x^2-y^2)解答过程[(x-y)^2+(x+y)^2]乘(x^2-y^2)解答过程[(x-y)^2+(x+y)^2]乘(x^2-y^2)解答过程=(x^2-x

[(x-y)^2+(x+y)^2]乘(x^2-y^2)解答过程
[(x-y)^2+(x+y)^2]乘(x^2-y^2)解答过程

[(x-y)^2+(x+y)^2]乘(x^2-y^2)解答过程
=(x^2-x2y+y^2+x^2+2xy+y^2)(x^2-y^2)
=2(x^2+y^2)(x^2-y^2)
=2x^4-2y^4

[(x-y)^2+(x+y)^2]乘(x^2-y^2)
=(2x^2+2y^2)(x^2-y^2)
=2(x^2+y^2)(x^2-y^2)
=2(x^4-y^4)
=2x^4-2y^4

=2(x^2+y^2)x (x^2-y^2)
=2 X (x^4-y^4)