So first thing you do is : c^1/2*d^1/2*d^1/3 then you find sum of the exponents for d c^1/2*d^(1/2+1/3) c^1/2*d^5/6 then first number goes under the root, second number outside so you have root from c ( you do not write number 1 as an exponent and 2 in front of the root because it's already considered to be a square root. As for the d: 6 sqrt(d^5)