4. When using substitution to solve, you end up cancelling the variable and have 2
numbers that don't equal each other.
How many solutions are there?

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.

What we want to do here is simplify the expression. our answer x^6 hope this . have a wonderful evening.how was the solution? let me know in chat! ~brooke