A kicker punts a football. The height of the football is a function of the horizontal distance from the kicker's goal line. Thirty yards from the goal line, the football reached its maximum height of 25 yards. The ball was 15 yards above the ground when it was 20 yards from the goal line. a) Write an equation in vertex form to represent the quadratic. b) Rewrite the equation in standard form.

Answerthe simplified expression isexplanationthe given expression is,let us deal with the bracket first.the two negatives in the parenthesis will become positive.the expression now becomes,we now expand the parenthesis to get,we group like terms to obtain,this simplifies to,

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.