Question

add. write your answer in simplest form.
$3\sqrt{7} + \sqrt{7}$

Explanation:

Step1: Identify like radicals

Both terms have $\sqrt{7}$, so they are like radicals.

Step2: Combine coefficients

The coefficient of $3\sqrt{7}$ is 3, and the coefficient of $\sqrt{7}$ (which is $1\sqrt{7}$) is 1. Add the coefficients: $3 + 1 = 4$.

Step3: Write the result

Multiply the combined coefficient by the radical: $4\sqrt{7}$.

Answer:

$4\sqrt{7}$