合并同类项化简｛6/(x^2-9)}-{2/x^2+6x+9}

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合并同类项化简
｛6/(x^2-9)}-{2/x^2+6x+9}

$合并同类项化简｛6/(x^2-9)}-{2/x^2+6x+9}$

｛6/(x^2-9)}-{2/x^2+6x+9}
=6/(x-3)(x+3)-2/(x+3)^2
=6(x+3)/(x-3)(x+3)^2-2(x-3)/(x-3)(x+3)^2
=(6x+18-2x+6)/(x-3)(x+3)^2
=(4x+24)/(x-3)(x+3)^2

合并同类项化简｛6/(x^2-9)}-{2/x^2+6x+9} 合并同类项 6x^2-2x-4x^2+5x+1 （合并同类项）3x²-6+4x-6x-2x²+5 合并同类项 6x²-2x-4x²+5x+1 X/2-2[(X-Y^/3)-1/6（y^-9/2x)] 去括号化简合并同类项等于 3x+2y合并同类项合并同类项：-6x²y-x+5x²y-2x+x³y+3x (3x-1/2)-(2-5x/2)-(3+20x/6)的合并同类项 7x-2x-3x 合并同类项 2x-3x-7x合并同类项 3(x-y)-2(x+y)-5(x-y)+4(x+y)+3(x-y) 化简合并同类项合并同类项2x^2-{-3x+6+[4x^2-(2x^2-3x+2)]}