Question 458134
{{{((2/(b^2-1))-(3/(ab-a)))/((3/(ab-a))-(2/(b^2-1)))}}}


{{{(((2(ab-a)-3(b^2-1))/(ab-a)(b^2-1)))/((3(b^2-1)-2(ab-a))/(ab-a)(b^2-1))))}}}


{{{(((2(ab-a)-3(b^2-1))/cross((ab-a)(b^2-1))))/((3(b^2-1)-2(ab-a))/cross((ab-a)(b^2-1)))))}}}


{{{(2(ab-a)-3(b^2-1))/(3(b^2-1)-2(ab-a))}}}


{{{(2ab-2a-3b^2+3)/(3b^2-3-2ab+2a))}}}.......take a minus in front of nominator


{{{-((-2ab+2a+3b^2-3))/(3b^2-3-2ab+2a))}}}.....rearrange the terms


{{{-(3b^2-2ab+2a-3)/(3b^2-2ab+2a-3))}}}



{{{-cross((3b^2-2ab+2a-3))1/cross((3b^2-2ab+2a-3))1)}}}


{{{-1}}}