SOLUTION: steps to solve x^4 + 2x^2-15=0

Algebra ->  Algebra  -> Quadratic Equations and Parabolas -> SOLUTION: steps to solve x^4 + 2x^2-15=0      Log On

Ad: You enter your algebra equation or inequality - Algebrator solves it step-by-step while providing clear explanations. Free on-line demo .
Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!
Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!

   

Question 628443: steps to solve x^4 + 2x^2-15=0
Found 2 solutions by lwsshak3, stanbon:
Answer by lwsshak3(6518) About Me  (Show Source):
You can put this solution on YOUR website!
steps to solve x^4 + 2x^2-15=0
factor
(x^2+5)(x^2-3)=0
x^2+5=0
x^2=-5
x=±√-5
x=±(√5) i
or
x^2-3=0
x^2=3
x=±√3
two real roots: ±√3
two imaginary or non-real roots: ±(√5) i

Answer by stanbon(57377) About Me  (Show Source):
You can put this solution on YOUR website!
steps to solve x^4 + 2x^2-15=0
-----
Factor:
(x^2+5)(x^2-3) = 0
---
x^2 = -5 or x^2 = 3
---
Real-Number solutions:
x = sqrt(3) or x = -sqrt(3)
============================
Cheers,
Stan H.
=====================