1. ## factorize expression

Hi could someone please tell me if these are correct
Factorise the following
(a)
x(x+6)

(b)
4x^3 - 8x
4x(x^2 -2) cubic expression

2. Originally Posted by wolfhound
Hi could someone please tell me if these are correct
Factorise the following
(a)
x(x+6)

(b)
4x^3 - 8x
4x(x^2 -2) cubic expression
They are correct, but depending on what you are expected to do the second one can be further factorised since $(x^2-2)=(x-\sqrt{2})(x+\sqrt{2})$

CB

3. Originally Posted by CaptainBlack
They are correct, but depending on what you are expected to do the second one can be further factorised since $(x-\sqrt{2})(x+\sqrt{2})$

CB
thanks but do I keep the 4x infront of the $(x-\sqrt{2})(x+\sqrt{2})$

4. Originally Posted by wolfhound
thanks but do I keep the 4x infront of the $(x-\sqrt{2})(x+\sqrt{2})$
Of course you do.

5. Originally Posted by mr fantastic
Of course you do.
of course I will indeed.