Simplify.

√2 times √8

To simplify this expression, we use the property of radicals that states √a * √b = √(a * b). Applying this property, we can write the expression as:

√2 * √8 = √(2 * 8)

Next, we simplify the multiplication:

√(2 * 8) = √16

Finally, we simplify the square root:

√16 = 4

Therefore, √2 times √8 simplifies to 4.