simlify this question please fast
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since a²-b²=(a+b)(a-b)
(x²+2x+2)(x²-2x+2)
(x²)²-(2x+2)²
x⁴-(4x²+8x+4) (a+b)²=a²+2ab+b2
x⁴-4x²-8x-4
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