SOLUTION: x4 − 7x2 − 144 = 0 find all real solutions algebraically

SOLUTION: x4 − 7x2 − 144 = 0 find all real solutions algebraically

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Question 668118: x4 − 7x2 − 144 = 0 find all real solutions algebraically
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
x^4 − 7x^2 − 144 = 0
use the quadratic formula

:

:

two solutions

x^2 =
x^2 = 16
x = +4, -4
and

x^2 =
Non-real solutions
:
Real solutions: x=4, x=-4
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