Question

solve x^3-2x+1=0

Answer 1

solve by using the quadratic formula

Answer 2

its a cubic though

Answer 3

oh right, woops misread that sorry :S

Answer 4

you can foctorise to (x-1)(x^2 + x - 1)

Answer 5

*factorise

Answer 6

The only possible rational roots are 1 and -1 so use synthetic division and see if they are roots.

Answer 7

then solve the second bracket with the quadratic formula to get roots of x = 1, 0.618, -1.618