神马品牌网电气施工规范标准:╒╕. ╒╕. ╒╕. ╒╕. math.............
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1.化简
a^n+1-6a^n+9a^n-1/a^2-9÷a^n+1+4a^n+4a^n-1/a^2-4 (n=1)
2.已知4x+3/x=0,求(2x+x^2)(x^2-2x+1)/(x^3-x^2)(x^2+4x+4)的值
(要过程...)
a^n+1-6a^n+9a^n-1/a^2-9÷a^n+1+4a^n+4a^n-1/a^2-4 (n=1)
2.已知4x+3/x=0,求(2x+x^2)(x^2-2x+1)/(x^3-x^2)(x^2+4x+4)的值
(要过程...)
(2x+x^2)(x^2-2x+1)/(x^3-x^2)(x^2+4x+4)
=(x-1)/(x+2)
a^n+1-6a^n+9a^n-1/a^2-9÷a^n+1+4a^n+4a^n-1/a^2-4 (n=1)
没看懂