Question 224851
So, set up our problem:
{{{7a^2b^2-ab-2ab^2-(-5ab^2+3a^2b^2-a^2b)}}}
We need to distribute the - sign to every term in the second part so:
{{{7a^2b^2-ab-2ab^2+5ab^2-3a^2b^2+a^2b)}}}
Then we can combine any like terms:
{{{7a^2b^2-3a^2b^2=4a^2b^2}}}
{{{-2ab^2+5ab^2=3ab^2}}}
both the {{{-ab}}} and tje {{{a^2b}}} have no like terms to be combined with, so they are left alone.
These answers all yield the final equation of:
{{{4a^2b^2+3ab^2-ab+a^2b}}}