Q. 25.0( 2 Votes )
The expansion of A. x3 + 2x2 – 5x – 6
B. x3 – 2x2 + 5x – 6
C. x3 + 2x2 + 5x – 6
D. x3 + 2x2 + 5x + 6
Answer :
Using identity,
(x + a)(x + b)(x + c) = x3 + (a + b + c)x2 + (ab + bc + ca)x + abc
We have,
(x + 1)(x – 2)(x + 3) = x3 + (1 – 2 + 3)x2 + (– 2 – 6 + 3)x – 6
= x3 + 2x2 – 5x – 6
Rate this question :
How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Smart Revision | Lets Solve Some Qs From Algebra43 mins
Smart Revision | Lets Solve Some Qs From Algebra43 minsTry our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
view all courses
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
RELATED QUESTIONS :
(x – y)(x2</
Tamilnadu Board Math Term-IIThe expansion of
Tamilnadu Board Math Term-IIThe expansion of
Tamilnadu Board Math Term-II