Question

How To Find Roots Of A Cubic Equation

Answer 1

Answer:

hello mate..

You can find roots of cubic equation by Factor theorem.

Factor theorem states that if f(a)=0 then

(x-a) is a factor of f(x). Then rewrite the cubic equation as a product of the linear factor (x-a) and a quadratic factor (ax^2 + bx +c).

Answer 2

Answer:

roots of a cubic equation is finding by "synthetic division"

and we find 1st root by trail and error method

trail and error method is nothing but checking by substituting values of number line

then we get form of ax³+bx²+cx+d=(x-a)(bx²+cx+d)