几道数学代数题(化简)1.(m+2)(m-2)(m+3)(x-3)2.(a+1)(a-1)(a+2)(a-2)3.(x²+x)(x-1)(x-2)4..(x²+x)(x²+x-2)

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几道数学代数题(化简)1.(m+2)(m-2)(m+3)(x-3)2.(a+1)(a-1)(a+2)(a-2)3.(x²+x)(x-1)(x-2)4..(x²+x)(x²

几道数学代数题(化简)1.(m+2)(m-2)(m+3)(x-3)2.(a+1)(a-1)(a+2)(a-2)3.(x²+x)(x-1)(x-2)4..(x²+x)(x²+x-2)
几道数学代数题(化简)
1.(m+2)(m-2)(m+3)(x-3)
2.(a+1)(a-1)(a+2)(a-2)
3.(x²+x)(x-1)(x-2)
4..(x²+x)(x²+x-2)

几道数学代数题(化简)1.(m+2)(m-2)(m+3)(x-3)2.(a+1)(a-1)(a+2)(a-2)3.(x²+x)(x-1)(x-2)4..(x²+x)(x²+x-2)
1.(m+2)(m-2)(m+3)(x-3)
最后是m-3
=[(m+2)(m-2)][(m+3)(m-3)]
=(m²-4)(m²-9)
=m^4-13m²+36
2.(a+1)(a-1)(a+2)(a-2)
=[(a+1)(a-1)][(a+2)(a-2)]
=(a²-1)(a²-4)
=a^4-5a²+4
3.(x²+x)(x-1)(x-2)
=(x²+x)(x²-3x+2)
=x^4-3x³+2x²+x³-3x²+2x
=x^4-2x³-x²+2x
4..(x²+x)(x²+x-2)
=(x²+x)²-2(x²+x)
=x^4+2x³+x²-2x²-2x
=x^4+2x³-x²-2x