Question

Please answer this correctly​

Answer 1

$1. \: r ^{2} - 1$

$2. \: a {}^{2} + 100 + 200(a)$

$3. \: m {}^{2} + 64 - 16(m)$

$4. \: h^{3} + 343 + 21h(h + 7)$

$\huge\underline\mathtt\colorbox{cyan}{Hope it Helps㋡}$