Question

平方-3x分之x+3+x的平方-6x+9分之x-3)/x分之3-x的值

Answer 1

[(x+3)/x(x-3)+(x-3)/(x-3)²】×[-(x-3)/x]

=(x+3+x)/x(x-3)×[-(x-3)/x]

=(2x+3)/x²