can you guys please help me with the following questions??!!!

1. Factorise:

a.

b.

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- December 26th 2008, 10:48 PMsudha_14factorize
can you guys please help me with the following questions??!!!

1. Factorise:

a.

b. - December 26th 2008, 11:33 PMnzmathman
By inspection,

You could have used the quadratic formula here to find the 2 roots and thus factorise the equation.

Using the remainder theorem, we can see

And therefore is a root, therefore is a factor of the polynomial.

Factorising: - December 26th 2008, 11:48 PMsudha_14Quote:

Originally Posted by**nzmathman**

thanks in adv...(Happy) - December 27th 2008, 12:01 AMnzmathman
Hmmm I know how to do the long division but cannot present it here nicely for you to see...I am not that advanced in the math coding system. I'm just able to factorise such expressions straight away...

- December 27th 2008, 12:03 AMsudha_14
hmmm...sure .. no probz..ill try the long division again and if i still have a doubt..i'll tell u...

- December 27th 2008, 12:16 AMMathstud28
- December 27th 2008, 12:16 AMred_dog
b) Another approach, without the long division:

- December 27th 2008, 12:26 AMsudha_14
thanks A LOT guys....i had completely forgotten about that method...

anyways...thanks again!!!!! alot!!