Question

i need help (problem will be in comments)

Answer 1

Have you considered multiplying by \(\dfrac{\sqrt{2}}{\sqrt{2}}\)

Answer 2

yes but what would happen to the numerator @tkhunny

Answer 3

You tell me. What happened to the denominator?

Answer 4

@tkhunny i would became 2

Answer 5

*become

Answer 6

wait would i have to cancel out the 2's?

Answer 7

How did that happen? \(\sqrt{2}\cdot\sqrt{2} = \sqrt{2\cdot 2} = \sqrt{4} = 2\)

Do EXACTLY that with the numerator.

Answer 8

Don't even think of "cancelling" anything. We jus created this structure. Why would you subsequently destroy it?

Answer 9

my teacher didnt show it to us like that

Answer 10

he gave us this example and did this: