Multiply expressions with radicals and simplify if possible

Question

1) Simplify the expression. Assume that x and y arenonnegative real numbers:

2³√(54x⁸y³z⁷)=

2)  Simplify the expression with radicals:

√128 + 3√18 - 2 √24 + 4 √54 =

3) Simplify the expression with radicals:

2√18 - 5√72 + 2 √125 - 4 √80 =

4.  Perform the indicated operations and simplify your answer.

2(√5 - 3)² =

5. Multiply expressions with radicals and simplify if possible:

(2√3 + 3√5)(3√2 - 4√3) =

6. Divide expressions with radicals and simplify if possible:

18⁴√(5m⁴)/⁴√(8m²)

7.  Use radical notation to rewrite the expression.  Simplify if possible:

(-64)^2/3 + (36)^3/2 =

8. Rationalize the denominator and simplify if possible:

12/√12

9. Rationalize the denominator and simplify if possible:

8/√5 -1 =

10. Simplify. Your answer should contain only positive exponents.

{a^3/2b^-2/(ab^4/3)^-1}^7/4 =