Posted by Claire on Wednesday, October 10, 2007 at 1:39pm.
Factorise the following:
x^4  x^3  x^2 + x
The answer is x(x+1)(x1)^2
but I cannot understand how to get this answer. Can someone please show me the working? Thanks!

Maths algebra  bobpursley, Wednesday, October 10, 2007 at 1:55pm
factor out x
x(x^3x^2 x + 1)
Now, on the cubic part, notice the 1 a the end. That means the factors have to multiply to one.
x( x(x^21) (x^21))
x(x1)(x^21) and you can factor the x^21 into two factors..
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