Question Number 20927 by amaresh pradhan last updated on 08/Sep/17
$$\left({a}+{b}\right)×\left({a}+{b}\right) \\ $$
Answered by Joel577 last updated on 08/Sep/17
$$=\:\left({a}\:+\:{b}\right)^{\mathrm{2}} \:=\:{a}^{\mathrm{2}} \:+\:\mathrm{2}{ab}\:+\:{b}^{\mathrm{2}} \\ $$