Gujarati
4-2.Quadratic Equations and Inequations
normal

The sum of all non-integer roots of the equation $x^5-6 x^4+11 x^3-5 x^2-3 x+2=0$ is

A

$6$

B

$-11$

C

$-5$

D

$3$

(KVPY-2017)

Solution

(d)

Given,$x^5-6 x^4+11 x^3-5 x^2-3 x+2=0$

$(x-1)(x-2)\left(x^3-3 x^2+1\right)=0$

The sum of non-integer roots are sum of roots of equation

$x^3-3 x^2+1=0$ i.e. 3

Standard 11
Mathematics

Similar Questions

Start a Free Trial Now

Confusing about what to choose? Our team will schedule a demo shortly.