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+x-2)](/uploads/image/z/635369-41-9.jpg?t=%E5%87%A0%E9%81%93%E6%95%B0%E5%AD%A6%E4%BB%A3%E6%95%B0%E9%A2%98%EF%BC%88%E5%8C%96%E7%AE%80%EF%BC%891.%EF%BC%88m%2B2%29%28m-2%29%28m%2B3%29%28x-3%292.%EF%BC%88a%2B1%EF%BC%89%28a-1%29%28a%2B2%29%28a-2%293.%EF%BC%88x%26sup2%3B%EF%BC%8Bx%EF%BC%89%EF%BC%88x%EF%BC%8D1%EF%BC%89%EF%BC%88x%EF%BC%8D2%EF%BC%894..%EF%BC%88x%26sup2%3B%EF%BC%8Bx%EF%BC%89%EF%BC%88x%26sup2%3B%EF%BC%8Bx%EF%BC%8D2%EF%BC%89)
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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+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