Which second degree polynomial function has a leading coefficient of 2 and roots –3 and 5?
a.) f(x) = 2x2 + 4x – 30
b.) f(x) = 2x2 + 2x – 15
c.) f(x) = 2x2 – 4x – 30
d.) f(x) = 2x2 – 2x – 15

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.