Question 124516
1) {{{x^2/(x-3)-  9/ (x-3)}}}....common denominator {{{x-3}}}


{{{(x^2-9)/ (x-3)}}}


{{{(x^2-3^2)/ (x-3)}}}


{{{((x-3)(x+3))/ (x-3)}}}


{{{(cross((x-3))(x+3))/cross((x-3))}}}


{{{x+3}}}



2) {{{x/(x+2)- 3/4}}}


{{{(4x - 3(x+2))/4(x+2)}}}


{{{(4x - 3x -6)/4(x+2)}}}


{{{(x-6)/4(x+2)}}}