What's the square root of 108 a to the 7th power b to the 5th power

Step-by-step explanation:

Factor all the factors making up the square root.

108: 2*2*3*3*3

a^7: a*a*a*a*a*a*a

b^5:b * b * b * b * b

The rule for taking a square root of this is

For every pair, you get to take one number outside the root sign and throw the other one away.

2*3*a * a * a * b * b√ (3*a * b)

6a^3b^2 * √ (3*a*b)