Question

The formula used to find the cubic roots of cubic expression

Answer 1

Formula for cubic equation ;

$( a - b )^3 = a^3 - b^3 - 3ab ( a - b )$

$( a + b )^3 = a^3 + b^3 + 3ab ( a + b )$


》》 BE BRAINLY 《《

Answer 2

Refer the above attachment for the most simplified cubic formula for a general cubic polynomial.

where, Δ = –27a²d² + 18abcd –4ac³ – 4b³d + b²c²

(The cubic discriminant)