Question

4-4x+x的平方分之2x-6除以(x+3)乘3+x分之x的平方+x-6

Answer 1

=[2(x-3)/(x-2)^2]/(x+3)*[(x-2)(x+3)/(x+3)] =2(x-3)/[(x-2)(x+3)] =(2x-6)/(x^2+x-6)