Question 153286

First remove the parentheses.
Next combine like terms.

{{{ (9q^3 - 4) - (7q^2 - 5) + (7q^3 + 2q^2) }}}
={{{ 9q^3 - 4 - 7q^2 + 5 + 7q^3 + 2q^2 }}}
={{{9q^3+7q^3-7q^2+2q^2-4+5}}}
={{{16q^3-5q^2+1}}}