因式分解(x+1)(3x+q)(5x-1)(7x-1)+63x^4

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因式分解(x+1)(3x+q)(5x-1)(7x-1)+63x^4
因式分解(x+1)(3x+q)(5x-1)(7x-1)+63x^4

因式分解(x+1)(3x+q)(5x-1)(7x-1)+63x^4
(x+1)(3x+1)(5x-1)(7x-1)+64x^4 修改了两处,不知道是不是这样,否则不能分解
=(x+1)(5x-1)(3x+1)(7x-1)+64x^4
=(5x^2+4x-1)(21x^2+4x-1)+64x^4
=105 x^4+26x^2(4x-1)+(4x-1)^2+64x^4
=169x^4+26x^2(4x-1)+(4x-1)^2
=(13x^2+4x-1)^2
(x+1)(3x+1)(5x-1)(7x-1)+63x^4 修改了一处,不知道是不是这样,否则不能分解
=(x+1)(5x-1)(3x+1)(7x-1)+63x^4
=(5x^2+4x-1)(21x^2+4x-1)+63x^4
=105 x^4+26x^2(4x-1)+(4x-1)^2+63x^4
=168x^4+26x^2(4x-1)+(4x-1)^2
=(12x^2+4x-1)(14x^2+4x-1)

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