# Math Help - factorise

1. ## factorise

can someone show me how to factorise $x^2 - 3$

thanks

2. $x^2-3=(x-\sqrt{3})(x+\sqrt{3})$

3. thankyou, could you show me how it works like that please? i mean, how you figured it out

4. Originally Posted by mark
can someone show me how to factorise $x^2 - 3$

thanks
Hi

$
x^2-(\sqrt{3})^2=(x+\sqrt{3})(x-\sqrt{3})
$