Question

simplify the radical expression.

1. $sqrt{64} - sqrt{28}$

Explanation:

Step1: Simplify $\sqrt{64}$

$\sqrt{64} = 8$

Step2: Simplify $\sqrt{28}$

$\sqrt{28} = \sqrt{4 \times 7} = \sqrt{4} \times \sqrt{7} = 2\sqrt{7}$

Step3: Subtract the simplified terms

$8 - 2\sqrt{7}$

Answer:

$8 - 2\sqrt{7}$