How to simplify -5√18x
Do you simplify the 5 since nothing will go into it?
I know you can simplify √18x by doing something like:
√9x * 2x = √9x * √2x = ??
I'm very confused!

Question

jim_thompson5910 · Answer

is it 

$$\Large -5\sqrt{18x}$$

OR

is it

$$\Large -\sqrt[5]{18x}$$

anonymous · Answer

it's the first one

jim_thompson5910 · Answer

ok you can break up 18x into 9*2x (kinda like what you're doing above) to get

$$\Large -5\sqrt{18x}$$ 

$$\Large -5\sqrt{9*2x}$$ 

$$\Large -5\sqrt{9}*\sqrt{2x}$$ 

$$\Large -5*3*\sqrt{2x}$$ 

$$\Large -15\sqrt{2x}$$

jim_thompson5910 · Answer

the only difference is that there isn't an x with the 9 since you can't factor x into x times x

anonymous · Answer

Oh okay, I see what you're saying, thank you!

jim_thompson5910 · Answer

yw