Use Coupon: CART20 and get 20% off on all online Study Material

Total Price: Rs.

There are no items in this cart.
Continue Shopping
Grade: 11
solve for x:
2 years ago

Answers : (2)

104 Points
step 1: by hit and trial, put some integers like 1,2,-1and-2 in the given equation 
RESULT: if we put 2 in the given equation, it will give us zero in RHS side, so we can say that 2 is the root of the cubic equation 
                   or (x-2) is the factor of equation 
step 2 :  now divide the cubic equation by its factor (x-2) , we will get quotient as 2x2 + 7x + 15 and remainder will be 0 . 
step 3 : (x-2)(2x2 + 7x + 15 ) = 2x3 + 3x2 + x -30 
step 4 : now solve the quadratic equation and you will get three factors or three vaue of x 
                NOTE: roots may be imaginary or real
2 years ago
Ankit kumar jha
28 Points
Just use hit and trial method to obtain at least one zero of the equation. Here we get 2 as one of its solutions. Then x-2 is a factor of the  given equation. You wiil get 2x^2+7x+15 as its quotient
. Factorise the quotient you will get another roots. 
2 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies

Course Features

  • 101 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution

Course Features

  • 110 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions

Ask Experts

Have any Question? Ask Experts

Post Question

Answer ‘n’ Earn
Attractive Gift
To Win!!! Click Here for details