Which equation is related to the equation shown?
x + 3 = 12
a.
x = 12 + 3
b.
x = 12 ÷ 3
c.
x = 12 − 3
d.
x = 12 • 3

C, because it's the opposite of the actual equation.

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.