计算:(a+2)(a-2)(a^4+4a^2+16) 和 (x^2+2xy+y^2)(x^2-xy+y^2)

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计算:(a+2)(a-2)(a^4+4a^2+16)和(x^2+2xy+y^2)(x^2-xy+y^2)计算:(a+2)(a-2)(a^4+4a^2+16)和(x^2+2xy+y^2)(x^2-xy+

计算:(a+2)(a-2)(a^4+4a^2+16) 和 (x^2+2xy+y^2)(x^2-xy+y^2)
计算:(a+2)(a-2)(a^4+4a^2+16) 和 (x^2+2xy+y^2)(x^2-xy+y^2)

计算:(a+2)(a-2)(a^4+4a^2+16) 和 (x^2+2xy+y^2)(x^2-xy+y^2)
(a+2)(a-2)(a^4+4a^2+16)
=(a^2-4)(a^2+4)^2
=(a-2)(a+2)(a^2+4)^2
(x^2+2xy+y^2)(x^2-xy+y^2)
=[(x+y)^2](x+y)(x-y)
=(x-y)(x+y)^3