Find the domain and range of the function below. y = 3x2 - 6x + 5
a.

D: all real numbers

R: (y ≥ 2)
c.

D: (x ≥ 2)
R: all real numbers
b.

D: all real numbers
R: (y ≤ 2)
d.

D: all real numbers

R: all real numbers

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.

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Here is my answer, i'm sorry if you didn't understand my explanation