Question

find the product by using a sutable identity 1 (x+5)(x+4)

Answer 1

${x}^{2} + 9x + 20$
This is the answer solved by the identity x^2+(a+b)X+ab
x^2+(5+4)x+5×4

Answer 2

$hey \: mate \: here \: is \: your \: answer...$
$(x + 5)(x + 4) = x {}^{2} + 4x + 5x + 20$
$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = x {}^{2} + 9x + 20$


$hope \: it \: helps.....$