Consider the equation: x^2=-8x – 7
1) Rewrite the equation by completing the square.
Your equation should look like (x + c)^2 = d or (x – c)^2 = d.
2) What are the solutions to the equation?

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?