Question

Find all the zeroes of the equation
3x^2-4=-x^4

Answer 1

so you have x^4+3x^2-4=0

Answer 2

this is a quadratic in terms of x^2

Answer 3

that is if you let x^2=u then you see we have a quadratic to solve

Answer 4

\[u^2+3u-4=0\]
solve this as a first step