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If the roots of the equationx³ - 12 x²+ 39 X - 28 =0 are in AP the common differences is

Sudhanva G V , 6 Years ago
Grade 11
anser 1 Answers
AKSHANSH PAREEK

Last Activity: 6 Years ago

if roots of equation sre in AP then use difference of roots  formula
i.e.  D1/2/a     D=discriminant
                     a=12
 
let  roots be d and f 
 
(392+4*12*28)1/2/12 = answere
 
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