## Step-by-step Solution

Problem to solve:

Learn how to solve power of a product problems step by step online.

$\sqrt{4\cdot \sqrt{5-3\cdot \sqrt{20}}}$

Learn how to solve power of a product problems step by step online. Solve the product power (2*2*(5-320^0.5)^0.5)^0.5. Multiply 2 times 2. The square root of 20 is 2\sqrt{5}. Multiply -3 times 2\sqrt{5}. Subtract the values 5 and -6\sqrt{5}.