IndigoLearn

2,-1

rishi pandey

CA Foundation

★ 1K+

25-Feb-20 19:14

How

Chinna Sai

CA Foundation

★ 7K+

26-Apr-20 07:36

Let roots be a & b; a + b = 3; (a)3 +(b)3 = 7 (a+b)3 = a3 +b3 +3ab(a+b) (a+b)3 = 7 + 3ab( 3) (3)3 = 7 + 9ab 9ab = 20 ab = 20/9 a+b = 3 A quadratic equation is x² - (sum of roots) x + product of roots= 0 x² - 3x +  20/9 = 0 9x² -27x +  20 = 0

Sriram Somayajula

Admin

27-Apr-20 19:35