1. What is the GCF of the coefficients? 18d4e−45d2+36d.

2. What is the GCF of the terms in the polynomial?

18d4e2−45d2+36d

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.