Which of the following expressions are equivalent to 3x – 20?Choose all answers that apply. 3(x – 7) + 1 3( x + 1) – 23 7 + 3( x -9)

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.