solve x^4-6x^2=7

- stapel_eliz
**Posts:**1738**Joined:**Mon Dec 08, 2008 4:22 pm-
**Contact:**

sanman777 wrote:solve x^4-6x^2=7

This is an equation

. . . . .

. . . . .

So factor the above just as you would

. . . . .

Then solve the two factors:

. . . . .

Whether you have two solutions or four will depend upon whether you've studied

If you get stuck, please reply with a clear listing of your work and reasoning so far. Thank you!