## AriPotta 2 years ago sorry @Hero, but can you help again?

47/7 = 7. That means that √49 is 7. That makes the answer 7/√2

2. Hero

@Bladerunner1122, there's more to it than you think.

3. Hero

No, it's not that simple unfortunately

oh?

Enlighten me.

6. Kainui

Technically you're not completely wrong, but it's nicer to multiply by sqrt(2)/sqrt(2) to get the radical out of the denominator.

7. Hero

The fraction is not in simplest form. You have to rationalize like what @Kainui is suggesting.

OH! yeah. but the answer format requires it in.

9. Kainui

You can multiply by sqrt(2)/sqrt(2) since it equals 1, and you can multiply anything by 1 without changing it.

I know, but original question has the answer selection has the √2 in the denominator.

11. Hero

@AriPotta, that's not what I got when I multiplied

Oh darn it. I'm totally wrong. xD

13. Hero

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

Mhmm... I got √(2x7x7) / 2 = 7√(2) / 2

yes

16. AriPotta

mmk. thanks guys :)