expand (x+3)^2 — step-by-step solution

Let's expand:

{(x + 3)}^{2}

(x + 3) \cdot (x + 3)

x \cdot x

+ x \cdot 3

+ 3 x

+ 3 \cdot 3

▷Answer: $x^{2} + 6 x + 9$