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.

Answered by Alex Z. Maths tutor

1919 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

A fridge of height 2m and width 0.8m is tilted in a delivery van so that one edge rests on the edge of a table and another touches the ceiling, as shown in the diagram. The total height of the inside of the van is 1.5m. Find the height of the table.


How do you factorise?


Solve the inequality 4m +3 > 15


5, 11, 21, 35, 53, ... Find the nth term of this sequence.


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 2013–2024

Terms & Conditions|Privacy Policy