How do I find the roots of a quadratic?

e.g. given x^2 +3x -8 = 0using the quadratic formulayou find x = (-b +- sqrt(b^2 -4ac))/2ayou then find one root using the plus instead of plus minus sign, and the other root using the minus instead of plus minus sign.

AZ
Answered by Alex Z. Maths tutor

2861 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Solve x^2 -6x +5 = 0 and plot this graph between -10<x>10


Solve the following simultaneous equations: 3x+y=11, 2x+y=8


Probability: "Sock Drawer" style questions.


how am I meant to solve sq.root(6^2+8^2) = cube.root(125a^3) when one side is squared and the other is cubed?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning