Which of the following is a zero for the function f(x) = (x - 15)(x + 1)(x - 10)? x=-15
x=-10
x=1
x= 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.