Question

Here it is Fall12-13

Answer 1

Okay.
For this you want to simply what is INSIDE the square root first.
We know that 63 is 9 times 7 and x^15/x = x^14, and y^9/y^11 = 1/y^2 by exponent rules.
So, inside the bracket we are left with 9x^14/y^2
Take square root of each value as you can.
9 square root = 3
So take 3 outside,
x^14/y^2 cannot be simplied, so leave them as they are.
The final answer is 3 SquareRoot (x^14/y^2)

Answer 2

Tahank you so much that helped alot