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a-2-ab-b-2-




Question Number 9698 by rahulrai441992@gmail.com last updated on 26/Dec/16
a^2 +ab+b^2
$${a}^{\mathrm{2}} +{ab}+{b}^{\mathrm{2}} \\ $$
Answered by geovane10math last updated on 26/Dec/16
a^2  + ab + b^2  = a^2  + 2ab + b^2  − ab =  = (a + b)^2  − ab
$${a}^{\mathrm{2}} \:+\:{ab}\:+\:{b}^{\mathrm{2}} \:=\:{a}^{\mathrm{2}} \:+\:\mathrm{2}{ab}\:+\:{b}^{\mathrm{2}} \:−\:{ab}\:= \\ $$$$=\:\left({a}\:+\:{b}\right)^{\mathrm{2}} \:−\:{ab} \\ $$

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