三道数学化简题,和我做的对对,只要最后结果1/(x-3)-6/(x^2-9)-(x-1)/(6+2x) 1/(6x-4y)-1/(6x+4y)+3x/(4y^2-9x^2) 1/(a+2)-4/(4-a^2)
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三道数学化简题,和我做的对对,只要最后结果1/(x-3)-6/(x^2-9)-(x-1)/(6+2x) 1/(6x-4y)-1/(6x+4y)+3x/(4y^2-9x^2) 1/(a+2)-4/(4-a^2)
三道数学化简题,和我做的对对,只要最后结果
1/(x-3)-6/(x^2-9)-(x-1)/(6+2x)
1/(6x-4y)-1/(6x+4y)+3x/(4y^2-9x^2)
1/(a+2)-4/(4-a^2)
三道数学化简题,和我做的对对,只要最后结果1/(x-3)-6/(x^2-9)-(x-1)/(6+2x) 1/(6x-4y)-1/(6x+4y)+3x/(4y^2-9x^2) 1/(a+2)-4/(4-a^2)
依此:
(-x^2-2x+7)/(x^2-9)
x/(4y^2-9x^2)
1/(a-2)