Sagot :
[tex](x+10)(x-10) \\ \\ Use \ the \ sum \ and \ difference \ of \ two \ squares. \\ \\ Formula; \\ (x) ^{2}-(y)^{2} \\ \\Let \ x=x \\ Let \ y=10 \\ \\ (x)^{2}-(10)^{2} \to \boxed { x^{2} -100} \\ \\ Hope \ it \ helps:) \\ Domini[/tex]