maths

posted by .

factorise x^3-4x62-11x+2

  • maths -

    check your typing, I suspect a typo.

  • maths -

    x^3-4x62-11x+2
    since ^ is shift-6, I suspect you meant:

    x^3-4x^2-11x+2

    cubics are not generally easy to solve, so look for easy integral roots first: ±1, ±2

    A little synthetic division yields

    (x+2)(x^2-6x+11)

    Using the quadratic formula, you get
    x = 3±2√2

    so, the factorisation is

    (x+2)(x-3-2√2)(x-3+2√2)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    I solved this problem 12x-6=11x -6+6=0 11x+6 12x=11x+6 12x-11x=x 11x-11x=0 x=6 Can someone show me the process of checking it?
  2. polynomial

    given that the expression ax^3-11x^2+bx+2 is exactly divisible by 2x^2-3x-2, find a and b then factorise completly (do not use long division).
  3. maths

    factorise fully: 5x^2+11x+2
  4. Maths

    How to do factorise ? What is Factorise ?
  5. math

    help please! Factorise (x+4)(3x^2-11x+6)
  6. Maths

    Factorise 3a-27
  7. maths

    factorise fully:xsquared-11x+18
  8. Maths

    How do you factorise 2x^2 - x - 1
  9. Maths factorise

    Factorise 3px-3py-x+y
  10. maths

    How to factorise 4(x+y)(3a-2b)+(6x+y)(2b-3 a)

More Similar Questions