Question 176951
{{{(5+2a+3a^2)-(a^2+a-6)}}} Start with the given expression.



{{{5+2a+3a^2-a^2-a+6}}} Distribute



{{{2a^2+a+11}}} Combine like terms.



So {{{(5+2a+3a^2)-(a^2+a-6)=2a^2+a+11}}}