SOLUTION: Solve the following equation for x: x^2 + 5 = 21 Express your answer(s) in both "simplified radical" form, and in decimal form. I came up with x=4 and x=sqrt16. Wou

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Solve the following equation for x: x^2 + 5 = 21 Express your answer(s) in both "simplified radical" form, and in decimal form. I came up with x=4 and x=sqrt16. Wou      Log On


   

Question 69007: Solve the following equation for x:
x^2 + 5 = 21
Express your answer(s) in both "simplified radical" form, and in decimal form.
I came up with x=4 and x=sqrt16. Would this be correct.
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
x^2 + 5 = 21
x^2 = 16
x = +- 4