Solve (x + 2 < 5) (x - 7 > -6). {x | -6 < x < 5} {x | x < 3 or x > 1} {x | x < 0}

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.