Question

simplify the following expression.
$(x + 3)^2$
$x^2 + 6x + ?$

Explanation:

Step 1: Recall the formula for squaring a binomial

The formula for \((a + b)^2\) is \(a^2 + 2ab + b^2\). In the expression \((x + 3)^2\), we have \(a = x\) and \(b = 3\).

Step 2: Apply the formula

First, calculate \(a^2\): \(x^2\). Then, calculate \(2ab\): \(2\times x\times3 = 6x\). Finally, calculate \(b^2\): \(3^2 = 9\). So, \((x + 3)^2 = x^2 + 6x + 9\).

Answer:

9