# Math Help - Difficulty with a factorisation problem

1. ## Difficulty with a factorisation problem

Needed to solve :

2x* - 3x - 4 = 0

Any help would be greatly appreciated.

2. ## Re: Difficulty with a factorisation problem

Roots of a quadratic equation $ax^2+bx+c=0$ are

$\frac {-b-\sqrt{b^2-4ac}} {2a}$ and $\frac {-b+\sqrt{b^2-4ac}} {2a}$, using these you get two roots.

For the given equation the roots are 2.35078 and -0.85078 (the have rounded the roots)

$\therefore$ the factore are $(x-2.35078)\miultiply(x+0.85078)=0$

3. ## Re: Difficulty with a factorisation problem

Originally Posted by FH88
Needed to solve :

2x* - 3x - 4 = 0

Any help would be greatly appreciated.
Hint :

$2x^2-3x-4=\frac{1}{8}(16x^2-24x+9-41)$