Posted by **Emma** on Tuesday, January 10, 2012 at 5:12pm.

Solve for x: x^4-15X^2+14=0

How would I solve this problem?

- Math -
**Henry**, Wednesday, January 11, 2012 at 8:21pm
(x^2-1)(x^2-14) = 0,

x^2-1 = 0,

x^2 = 1,

X = +-1.

x^2-14 = 0,

x^2 = 14,

X = +-sqrt14.

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