2x^4+4x^3-7x^2-x+7

Approximate the irrational solutions correct to 3 decimals.
If there is more than 1 real solution, enter them from smallest to largest, separated by a comma.

2 answers

solution? Is there an equal sign anywhere?
The solutions to
2x^4 + 4x3 - 7x2 - x + 7 = 0
are:
X1 = 0.962 + 0.567*i
X2 = 0.962 - 0.567*i
X3 = -0.94
X4 = -2.985

The first two are irrational.

I used an online polynomial root finder.