Question 35515
-3({{{x^2}}}+3y)+5(-6y-{{{x^2}}})
First distribute the -3 and the 5;
(-{{{3x^2}}}-9y) +(-30y-{{{5x^2}}})
add like terms;
{{{-3x^2}}}-{{{5x^2}}}-9y-30y=-{{{8x^2}}}-39y
=)