Q. 1 A5.0( 1 Vote )

Determine whether (x + 1) is a factor of the following polynomials:

6x4 + 7x3 – 5x – 4

Answer :

Let f(x) = 6x4 + 7x3 – 5x – 4


By factor theorem,


x + 1 = 0 ;x = – 1


If f(– 1) = 0 then (x + 1) is a factor of f(x)


f(– 1) = 6(– 1)4 + 7(– 1)3 – 5(– 1) – 4


= 6 – 7 + 5 – 4 = 11 – 11 = 0


(x + 1) is a factor of f(x) = 6x4 + 7x3 – 5x – 4


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses