Question

find the product in the above question​

Answer 1

Step-by-step explanation is given in attached picture

Hope it helps you mate..!!

Answer 2

Given :

$\sf Find~ the~ product~ of~(a + 2b)(2a - 8b).$

Solution :

$\: \: \: \: \sf \implies(a + 2b)(2a - 8b) \\ \\ \: \: \: \: \sf \implies a(2a) + a( - 8b) + 2b(2a) + 2b( - 8b) \ \\ \\ \ \: \: \: \: \sf \implies2 {a}^{2} - 8ab + 4ab - 16 {b}^{2} \\ \\ \: \: \: \: \sf \implies2 {a}^{2} - 16 {b}^{2} - 4ab$

$\sf {Therefore,~ the~ product~ of ~ (a+2b)(2a-8b)~is~2a^2-16b^2-4ab.}$