Question

find:
(a+3)²
step by step explanation
pls..quite fast​

Answer 1

Step-by-step explanation:

(a+b)2 = a2 + b2 + 2ab

a= a

b = 3

a^2 + 3^2 + 2(a)(3)

$a^{2} + 3^{2} + 2 \times a \times 3 \\ \\ \\ a^{2} + 9 + 6a$

Answer 2

Answer:

$a {}^{2} + 6a + 9$

Step-by-step explanation:

1. Expand the square,

$(a + 3) { }^{2} \\ = (a + 3)(a + 3)$

2. Distribute,

$a(a + 3) + 3(a + 3) \\ = a { }^{2} + 3a + 3a + 9$

3.Combine,

$a {}^{2} + 3a + 3a + 9 \\ = a {}^{2} + 6a + 9$

Hope it's helpful.