x^-9/x^-6x+9分式化简所有人给我解出来,

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x^-9/x^-6x+9分式化简所有人给我解出来,

x^-9/x^-6x+9分式化简所有人给我解出来,
x^-9/x^-6x+9分式化简
所有人给我解出来,

x^-9/x^-6x+9分式化简所有人给我解出来,
x^-9/x^-6x+9
=(x+3)(x-3)/(x-3)^
=(x+3)/(x-3)

/(2x²+6x)-(11-2x²)/(9-x²)+2
=7/[2x(x+3)]-(2x²-11)/(x²-9)+2
=7/[2x(x+3)]-(2x²-11)/(x+3)(x-3)+2
=[7(x-3)-2x(2x²-11)+2*2x(x+3)(x-3)]/[2x(x+3)(x-3)]
...

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/(2x²+6x)-(11-2x²)/(9-x²)+2
=7/[2x(x+3)]-(2x²-11)/(x²-9)+2
=7/[2x(x+3)]-(2x²-11)/(x+3)(x-3)+2
=[7(x-3)-2x(2x²-11)+2*2x(x+3)(x-3)]/[2x(x+3)(x-3)]
=(7x-21-4x³+22x+4x³-36x)/[2x(x+3)(x-3)]
=(-7x-21)/[2x(x+3)(x-3)]
=-7(x+3)/[2x(x+3)(x-3)]
=7/(6x-2x²)

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