(1)(x+2)(x^2-4)(x-2)=( )=( )= ( ) (2)-(x-1)^2×(1+x)^2×(1+x^2)^2

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(1)(x+2)(x^2-4)(x-2)=()=()=()(2)-(x-1)^2×(1+x)^2×(1+x^2)^2(1)(x+2)(x^2-4)(x-2)=()=()=()(2)-(x-1)^2×(

(1)(x+2)(x^2-4)(x-2)=( )=( )= ( ) (2)-(x-1)^2×(1+x)^2×(1+x^2)^2
(1)(x+2)(x^2-4)(x-2)=( )=( )= ( ) (2)-(x-1)^2×(1+x)^2×(1+x^2)^2

(1)(x+2)(x^2-4)(x-2)=( )=( )= ( ) (2)-(x-1)^2×(1+x)^2×(1+x^2)^2
(x+2)(x^2-4)(x-2)=(x+2)(x-2)(x^2-4)=(x^2-4)^2=x^4-8x^2+16
-(x-1)^2×(1+x)^2×(1+x^2)^2= -(x^2-1)(x^2-1)(x^2+1)(x^2+1)=-(x^4-1)^2= - x^8+2x^4-1

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