Question 484888
{{{(x^2+2)(2x^2-3)}}}



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




{{{2x^4-3x^2+4x^2-6}}}




{{{2x^4+x^2-6}}}



So {{{(x^2+2)(2x^2-3)=2x^4+x^2-6}}}