SOLUTION: Solve the following problems by defining the variable, writing a quadratic equation, solving it and then providing a written conclusion: - Four more than the square root of twi

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Solve the following problems by defining the variable, writing a quadratic equation, solving it and then providing a written conclusion: - Four more than the square root of twi      Log On


   

Question 247739: Solve the following problems by defining the variable, writing a quadratic equation, solving it and then providing a written conclusion:
- Four more than the square root of twice a number is equal to 12. What is the number?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
let x=the number
4+sqrt(2x)=12
subtract 4 from both sides
sqrt(2x)=8
square both sides
2x=64
divide both sides by 2
x=32
I leave the conclusion for you.