F(k)=k^2-3. find f^-1(k) , need for tomorrow.

If u need that answer go on google search up math Papa pre algebra calculator.

Here for a good time of free question

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.