[tex]1. \: r ^{2} - 1[/tex]
[tex]2. \: a {}^{2} + 100 + 200(a)[/tex]
[tex]3. \: m {}^{2} + 64 - 16(m)[/tex]
[tex]4. \: h^{3} + 343 + 21h(h + 7)[/tex]
[tex]\huge\underline\mathtt\colorbox{cyan}{Hope it Helps㋡}[/tex]
