Write 3x(x+4)(x-1) in standard form.

The Answer you are looking for is
 
3x^3 + 9x^2 - 12x

Just a second zzz

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.