Simplify each radical expression. Assume that all variables are positive 1) square root of 400x^2y^6 2) cube root of -125a^9 3) forth root of 81x^5y^9 I have no idea how to do these, please show steps and explanations .

Question

Simplify each radical expression. Assume that all variables are positive 
1) square root of 400x^2y^6 
2) cube root of -125a^9 
3) forth root of 81x^5y^9 
I have no idea how to do these, please show steps and explanations >.<

anonymous · Answer

Can you explain how you got those?

anonymous · Answer

omg thank you so much. can you help me with 3 more of kinda the same problems?

anonymous · Answer

1) cube root 64a^6b^2
2) square root of 50s^2t^4
3) square root of 256x^16y^28

anonymous · Answer

thank you :)

anonymous · Answer

@Luis Rivera wait for the 3rd one in the first set of questions, the answer is just 3xy^2 or its with the other xy?

anonymous · Answer

because they're like in a square and it confused me

anonymous · Answer

it's square root? what about the the third one in the second set?