Question

Multiply (a+5) by (a+4)

Answer 1

Answer:

a^2+9a+20

Step-by-step explanation:

(a+5)(a+4)=a^2+(5+4)a+5*4

=a^2+9a+20

Answer 2

$\huge\mathcal\red{answer}$

$(a + 5) \times (a + 4)$

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

${a}^{2} + 4a + 5a + 20$

${a}^{2} + 9a + 20$

hope it will help you