Quickly: ))
choose the correct simplification of the expression 4b over a^-10

a- a^10b over 4
b- 4a^10b
c- 4 over a^10b
d- already simplified

The answer is D because there is no same variables to put like terms together so there is no need for further simplification.

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.