根据题意得方程:
(2X+9)/(X+3)-1/(X-3)=2/X+2,
去分母:(公分母:X(X+3)(X-3)).
X(X-3)(2X+9)-X(X+3)=2(X+3)(X-3)+2X(X+3)(X-3)
2X^3+3X^2-27X-X^2-3X=2X^2-18+2X^3-18X
-12X=-18
X=3/2,
经检验X=3/2是原方程的解.
根据题意得方程:
(2X+9)/(X+3)-1/(X-3)=2/X+2,
去分母:(公分母:X(X+3)(X-3)).
X(X-3)(2X+9)-X(X+3)=2(X+3)(X-3)+2X(X+3)(X-3)
2X^3+3X^2-27X-X^2-3X=2X^2-18+2X^3-18X
-12X=-18
X=3/2,
经检验X=3/2是原方程的解.