Posted by mateyo on Wednesday, March 14, 2012 at 11:00am.
check your typing, I suspect a typo.
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)
Related Questions
maths - factorise fully: 5x^2+11x+2
Maths - How to do factorise ? What is Factorise ? Give me some examples ,please...
math - help please! Factorise (x+4)(3x^2-11x+6)
math - I solved this problem 12x-6=11x -6+6=0 11x+6 12x=11x+6 12x-11x=x 11x-11x=...
polynomial - given that the expression ax^3-11x^2+bx+2 is exactly divisible by ...
maths - factorise: a.) (a-b)^3+(b-c)^3+(c-a)^3
Maths - Factorise x^2+y^2
maths - factorise a^7+ab^6
Maths 7th grade - How do you factorise?
Maths - Factorise X^2 - y^2 - 2x + 2y
For Further Reading
