Question

Simplify the radical expression.. square root of 128

Answer 1

√128
facotr and find pairs for squares that can go out of the radical (√)
128=2 times 2 times 2 times 2 times 2 times 2 times 2
group the pairs
(2 times 2)(2 times 2)(2 times 2) times 2
write one of each pair outside
2 times 2 times 2√2
8√2 is the naswer

Answer 2

We start with the given expression and then simplify:

$\sqrt{128}$

$\sqrt{64*2}$

$8 \sqrt{2}$

Since 2 has no perfect square factors, this radical is now as simplified as possible.