Which of the following is equal to sqrt(50a^6b^7)?
a)5a^3b^3 sqrt(2b)
b) 5a^3b^2 sqrt(2b)
c) 10a^3b^3
d) 5^3b^3

Question

Which of the following is equal to sqrt(50a^6b^7)? 
a)5a^3b^3 sqrt(2b)
b) 5a^3b^2 sqrt(2b)
c) 10a^3b^3
d) 5^3b^3

tkhunny · Answer

Are you sitting in your exam right now?

anonymous · Answer

unforunately. @tkhunny

tkhunny · Answer

Why should anyone help you with that?

Do we KNOW that a > 0?  That's important.

anonymous · Answer

just because i need help during this exam and i posted here doesn't mean i'm stupid or didn't study. it's an open note quiz. i've been sick for a week and haven't learned any of this. @tkhunny

anonymous · Answer

What is the simplest form of the number? 27 ^2/3 (reads twenty seven to the two-thirds power)
a) 3 
b) 6
c) 9
d) 18

I think it's 18? Is that right? It's either 18 or 9 I'm pretty sure.

anonymous · Answer

|dw:1386335340845:dw|
anyone know how to solve this one? lol.

tkhunny · Answer

Just answer the questions.

$\sqrt{x^{2}} = |x|$
$\sqrt{x^{3}} = x\sqrt{x}$