Question 281508
(2x^2-5x-1)(x^2+x-3)
its easier if u seperate it into 3 multiplication and then add them together
#1) {{{2x^2(x^2+x-3)}}}
{{{2x^4+2x^3-6x^2}}}
#2) {{{-5x(x^2+x-3)}}}
{{{-5x^3-5x^2+15x}}}
#3) {{{-1(x^2+x-3)}}}
{{{-x^2-x+3}}}
now add the results together by adding like terms
{{{(2x^4+2x^3-6x^2)+(-5x^3-5x^2+15x)+(-x^2-x+3)}}}
{{{2x^4+2x^3-5x^3-6x^2-5x^2-x^2+15x-x+3}}}i organize them to make it easier to see what to add
{{{highlight(2x^4-3x^3-12x^2+14x+3)}}}