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

2537 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

work out the value of 4a + 2b when a = 4 and b = 3


Here are some fractions: 3/10, 2/8, 4/12, 12/40, 5/20. Which of these fractions are equivalent to 1/4?


Factorise x^2+6x+8


What are the possible value(s) of x for the following: x^2 + 3x - 54 = 0


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences