Easy Root

Algebra Level pending

What is the necessary condition for having a real root of the below equation? a x 3 + b x 2 + c x + d = 0 ax^3+bx^2+cx+d = 0

If and only if b , c , d b,c , d are Real If and only if a a is Real If and only if a , b , c , d a,b,c,d all are Real Always have a real root irrespective of the value of the coefficients

Som Ghosh by Som Ghosh , 33, India

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