Question Number 64396 by rachelleazarcon last updated on 17/Jul/19
$$\left(\mathrm{x}+\mathrm{2}\right)\left(\mathrm{x}−\mathrm{2}\right) \\ $$
Answered by MJS last updated on 17/Jul/19
$$\mathrm{are}\:\mathrm{you}\:\mathrm{serious}? \\ $$$$\mathrm{study}\:\mathrm{these}\:\mathrm{formulas} \\ $$$$\left({a}+{b}\right)^{\mathrm{2}} ={a}^{\mathrm{2}} +\mathrm{2}{ab}+{b}^{\mathrm{2}} \\ $$$$\left({a}−{b}\right)^{\mathrm{2}} ={a}^{\mathrm{2}} −\mathrm{2}{ab}+{b}^{\mathrm{2}} \\ $$$$\left({a}+{b}\right)\left({a}−{b}\right)={a}^{\mathrm{2}} −{b}^{\mathrm{2}} \\ $$