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.
thanks A LOT! for the solution of the first equation....but for the second one...can you please show the long division..cuz even i understood HOW to do it....but i go wrong in the procedure....ALWAYS!!!! so i kinda needed help with that....Originally Posted by nzmathman
thanks in adv...