作业帮x^2n+x^n-1/9y^2+1/4因式分解?我想了半天了
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x^2n+x^n-1/9y^2+1/4因式分解?我想了半天了
x^2n+x^n-1/9y^2+1/4因式分解?我想了半天了
x^2n+x^n-1/9y^2+1/4因式分解?我想了半天了
x^2n+x^n-1/9y^2+1/4
=(x^n)^2+(x^n)+1/4-(1/9)y^2
=[(x^n)^2+(x^n)+1/4]-(1/9)y^2
=[x^n+1/2]^2-[(1/3)y]^2
=[x^n+1/2+(1/3)y]*[x^n+1/2-(1/3)y]
(1)-18m^4 9m^2n^2 5n^4 =-(18m^4-9m^2n^2-5n^4) =-(3m^2 n^2)(6m^2-5n^2) (2)x^4-10x^2y^2 9y^4 =(x^2-y^2)(x^2
x^2n+x^n-1/9y^2+1/4
=(x^n)^2+(x^n)+1/4-(1/9)y^2
=[(x^n)^2+(x^n)+1/4]-(1/9)y^2
=[x^n+1/2]^2-[(1/3)y]^2
=[x^n+1/2+(1/3)y]*[x^n+1/2-(1/3)y]
只能分到这了
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x^2n+x^n-1/9y^2+1/4因式分解?我想了半天了
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