SOLUTION: Please Help!!! Solve... 1. -9(x-3)^2=-7 2. (x+4^2=3 3. 5(x-2)^2=3 Thanks In advance!!!

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Please Help!!! Solve... 1. -9(x-3)^2=-7 2. (x+4^2=3 3. 5(x-2)^2=3 Thanks In advance!!!      Log On


   

Question 86269: Please Help!!!
Solve...
1. -9(x-3)^2=-7
2. (x+4^2=3
3. 5(x-2)^2=3
Thanks In advance!!!
Answer by scianci(186) About Me  (Show Source):
You can put this solution on YOUR website!
I'll demonstrate #1, then you can do #s 2 and 3 on your own the same way:
-9(x-3)^2=-7
Divide both sides by -9:
%28-9%28x+-+3%29%5E2%29%2F-9 = -7%2F-9
(x - 3)^2 = 7%2F9
Take square roots of both sides:
sqrt%28x+-+3%29%5E2 = + - sqrt(7%2F9)
x - 3 = + -sqrt%287%29%2F3
x = 3 + - sqrt%287%29%2F3 or %289+%2B-+sqrt%287%29%29%2F3