Question

Multiply (a+5) by (a+4) Solve and i will mark as Brainliest

Answer 1

Answer:

$(a+5)(a+4)$

$→ \: {a}^{2} \: + \: 4a \: + \: 5a \: + \: 20$

$→ \: {a}^{2} \: + \: 9a \: + \: 20$