Consider the equation x^2 + 12x + c = 0. if c = -28, list the steps to solve the equation by completing the square, and give the solution or solutions.

Add 1/7 + -1/7 your answer should be reduced to its smallest form and should not be an improper fraction

Find the roots of the equation below. x^2 - 6 + 9 = 0

Pyotr tchaikovsky sporting goods operates on a 45% overhead based on the selling price, which results in an overhead of $65.34 on the newest version of an air hockey game set. if the air hockey game set costs pyotr tchaikovsky sports $49.32, find the selling price, the markup, and the net profit.