Question

pls answer me step by step
(k-l)(k+2l)

Answer 1

$\huge \sf {\orange {\underline {\pink{\underline {A᭄ɴsᴡᴇʀ࿐ :−}}}}}$

$(k - l)(k + 2l) \\ k(k + 2l) - l(k + 2l) \: \: \huge\downarrow \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \bf\: Changing \: sign \\ {k}^{2} + 2kl - kl - 2 {l}^{2} \\ {k}^{2} + kl - 2 {l}^{2}$