Y = (4x³ + 3)³ (2 - 3x)

8x^3 - 12x^4 + 6x^4 - 9x^4
- 15x^4 + 8x^3

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.