Question 398020
1: √9√4 My answer: 6
2: √56/√8 My answer: √7
3: √9ab^4 My answer: 3b^2√a
4: √50x^2 My answer: 5|x|√2
= {{{5x*sqrt(2)}}}
Maybe that's what you meant.
5: √100y^2z^4 My answer: 10yz^2 
6: 2√5+2√5 My answer: 4√5
7: 6√7-√7 My answer: 5√7
8: -3√2+2√2 My answer: -√2
9: 2√7+3√7+√7 My answer: 6√7 
Solve the equation: 
10: √x=9 My answer: x=81
11: √z=-1 My answer: no solution
z = 1.  Sqrt(z) = ± 1
12: √2a=2 My answer: a=2
13: p=√2p-1 My answer: p=1
It's ambiguous.  What's under the radical?