Simplify the rational expression by canceling common factors: fraction numerator x squared minus 9 x plus 18 over denominator x squared minus x minus 30 end fraction fraction numerator x minus 6 over denominator x plus 5 end fraction fraction numerator x plus 5 over denominator x minus 3 end fraction fraction numerator x minus 6 over denominator x minus 3 end fraction fraction numerator x minus 3 over denominator x plus 5 end fraction