hi, could anyone help me understand how to do quadratic equations. i've got the equation and it needs to be factorised. i was hoping someone could show me a systematic way of doing it. i read somewhere that you need to find 2 numbers that add together to make -7 and multiply together to make 2 but i don't think that applies here. the answer is . could someone show me a simple way of figuring it out so i don't have to resort to trial and error.