Evaluate x^2 +2x -4 = 0

Using the quadratic formula (-b +- sqrt(b^2 -4ac))/2a we can sub substitute a = 1, b=2 and c = -4 to solve. The answer is x = -1 +/- sqrt(5)

AC
Answered by Adeolu C. Maths tutor

3355 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

cosx=cos60° what's X between 0 and 360


Solve 2x-5=3x+4


expand (x-3)^2


How do I know when to use sin, cos or tan?


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