How would i simplify the following radical expressions?

Question

√48 =?
√x^6y^7=?

Answer 1

48 = 3*4^2

So, √48 =4√3

 

 

x^6y^7= (x^3 y^3)^2 y

So, √x^6y^7= |x^3| y^3√y

 

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Ideas: Factor out squares so that the square root and the square undo each other.