What if my equation doesn't factorise?

  • Google+ icon
  • LinkedIn icon

For all quadratic equations, you can use the quadratic formula. Given an equation of the form ax2+bx+c, you can plug those values into this formula:

x1, x= (-b +/- sqrt(b- 4ac)) / 2a

Note: the term b- 4ac is called the determinant  and must be greater than 0 for your equation to have any solutions.

Hayden M. A Level Further Mathematics  tutor, GCSE Maths tutor, A Lev...

About the author

is an online GCSE Maths tutor with MyTutor studying at Warwick University

Still stuck? Get one-to-one help from a personally interviewed subject specialist.

95% of our customers rate us

Browse tutors

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this. Dismiss