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-16x^2y^2z+16x^2yz^2-4x^2z^2a^n+2+a^n+1-6a^n(3x^2-8x+4)/(x-2)

题目详情
-16x^2y^2z+16x^2yz^2-4x^2z^2
a^n+2 +a^n+1 -6a^n
(3x^2-8x+4)/(x-2)
▼优质解答
答案和解析
-16x^2y^2z+16x^2yz^2-4x^2z^2
最后是z^3
=-4x^2z(4y^2-4yz+z^2)
=-4x^2z(2y-z)^2
a^n+2 +a^n+1 -6a^n
=a^n(a^2+a-6)
=a^n(a-2)(a+3)
(3x^2-8x+4)/(x-2)
=(x-2)(3x-2)/(x-2)
=3x-2