SOLUTION: I need to find all real solutions of the equation, correct to two decimals for the equation. I think I need to solve it graphically, but I have no idea how. x^4-8x^2+2=0

Question 662032: I need to find all real solutions of the equation, correct to two decimals for the equation. I think I need to solve it graphically, but I have no idea how. x^4-8x^2+2=0
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
I need to find all real solutions of the equation, correct to two decimals for the equation. I think I need to solve it graphically, but I have no idea how. x^4-8x^2+2=0
------
Use the Quadratic Formula:
x^2 = [8 +- sqrt(64-4*2)]/2
---
x^2 = [8 +- sqrt(56)]/2
----
x^2 = [4 +- 2sqrt(14)]
---
x^2 = [4+2sqrt(14)] or x^2 = [4-2sqrt(14)]
----
Now solve for "x":

==================================================
Cheers,
Stan H.
RELATED QUESTIONS
How many mL of 0,160M aqueous solution of KOH must be taken to obtain .0957 gr of salt?... (answered by josgarithmetic)

I need to find all real or imaginary solutions to this equation. Use the method of your... (answered by ankor@dixie-net.com)

Hi! I need to find all real solutions of this equation: x^6-2x^3-3=0 I don't think... (answered by longjonsilver)

I need to solve the equation square root of x+56=x and i ned to check for extraneous... (answered by venugopalramana)

I need to get all the possible solutions for this equation: cos(x) = sin(x) +... (answered by stanbon)

I need to find all real solutions to this equation. Please help. (y - 2/3)^2 =... (answered by stanbon)

I need help to find all real or imaginary solutions to each equation. -x^2 + x + 12 =... (answered by jim_thompson5910)

Hello I need help figuring out this equation involving radicals. I need to solve the... (answered by ankor@dixie-net.com)

I need help creating a real life equation with two variables (x,y) and to solve the... (answered by drk)