Question

Please Help!
Square root of 18a^5b^2

Answer 1

Factor out perfect squares: 18 = 9 * 2 (9 is a perfect square)
a^5 = a^4 * a
b^2 is already a perfect square.
sqrt(18a^5b^2) = sqrt(9 * 2 * a^4 * a * b^2) = ?

Answer 2

sqrt(9) = 3
sqrt(a^4) = a^2
sqrt(b^2) = b
The rest will remain inside the square root
sqrt(9 * 2 * a^4 * a * b^2) = 3a^2b * sqrt(2a)

Answer 3

You can also write square root as exponent 1/2 and use the exponent rules to solve the problem.