Упростить выражение:
1) (х^2+2)^2-(х-2)(х+2)(х^2+4)
2) (а^2-2)^2-(а-2)(а^2+4)(а+2)
3) (3а-4)(9а^2+12а+16)
4) (n+1/2)(n^2-1/2n+1/4)
5) (1/2x-1/3y)(1/4x^2+1/6xy+1/9y^2)
6) a(a-1)(a+2)-(a-3)(a^2+3a+9)
1) (х^2+2)^2-(х-2)(х+2)(х^2+4)
2) (а^2-2)^2-(а-2)(а^2+4)(а+2)
3) (3а-4)(9а^2+12а+16)
4) (n+1/2)(n^2-1/2n+1/4)
5) (1/2x-1/3y)(1/4x^2+1/6xy+1/9y^2)
6) a(a-1)(a+2)-(a-3)(a^2+3a+9)
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