Question

(a+2)во 2 степени =(a+2)(a+2) = _ + _+_ + _ +

Answer 1

(a+2)^2 = a^2 + 4a + 4, по формуле квадрата суммы: (a+b)^2 = a^2 + 2ab + b^2

Answer 2

To expand the expression $(a+2)^2$, you can use the distributive property (FOIL):

$(a+2)(a+2) = a(a+2) + 2(a+2)$

Now, distribute $a$ and $2$ to each term inside the parentheses:

$a(a+2) = a^2 + 2a$

$2(a+2) = 2a + 4$

Now, you can combine these results:

$(a+2)^2 = a^2 + 2a + 2a + 4$

Simplify further:

$(a+2)^2 = a^2 + 4a + 4$

So, $(a+2)^2$ expands to $a^2 + 4a + 4$.