Question

How do I find the X intercepts of the cubic function -2x^3 + 6x^2 - 3

Answer 1

There's a formula, but it's too damn complicated.
http://en.wikipedia.org/wiki/Cubic_formula#General_formula_for_roots
Just do trial and error. The moment you find one root, divide the equation by (x - the root) and get a quadratic equation.

Answer 2

I'm so confused still..

Answer 3

wait a sec... X intercept means the points where it crosses the x-axis, right?

Answer 4

yes so the 0s

Answer 5

http://www.mathportal.org/calculators/polynomials-solvers/polynomial-roots-calculator.php

Answer 6

There's no simple way to calculate the zeroes of your equation.

Answer 7

Go to the link and paste the function there.

Answer 8

Keep in mind that you only have to find ONE. After that, it's quadratic and the other two are easy.