How many solutions does the equation \(0.25x^4 - 0.75x^2 -1 = 0\) have? - The Beat The GMAT Forum

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How many solutions does the equation \(0.25x^4 - 0.75x^2 -1 = 0\) have?

VJesus12: Legendary Member; Posts: 2276; Joined: Sat Oct 14, 2017 6:10 am; Followed by:3 members

by VJesus12 » Wed Dec 16, 2020 8:35 am

00:00

How many solutions does the equation \(0.25x^4 - 0.75x^2 -1 = 0\) have?

A) 0
B) 1
C) 2
D) 3
E) 4

Answer: C

Source: e-GMAT

Source: Beat The GMAT — Problem Solving | Wed Dec 16, 2020 8:35 am

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