Monday
March 27, 2017

Post a New Question

Posted by on .

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)

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question