已知(Ax^2n-1)=x^3n(x≠0),则A=?
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已知(Ax^2n-1)=x^3n(x≠0),则A=?
已知(Ax^2n-1)=x^3n(x≠0),则A=?
已知(Ax^2n-1)=x^3n(x≠0),则A=?
A=x^3n÷x^(2n-1)
=x^(3n-2n+1)
=x^(n+1)
方程要有等号,你这个不是方程,检查一下,然后向我追问
=2√3(3√2-3)-2(3√2-3)
=6√6-6√3-6√2+6
令a=2x+3y
原式=(a-3)(a+7)-11
=a²+4a-21-11
=a²+4a-32
=(a+8)(a-4)
=(2x+3y+8)(2x+3y-4)