find the roots of the equation 7x^2+11x-2=0 in exact form

since the values are too difficult to calculate from factorising, we use the quadratic formula ((-b)±(b^2-4ac)^(1/2))/(2a).putting the values in as (ax^2+bx+c=0) we find the roots in exact form are;(-11+(177)^(1/2))/14and (-11-(177)^(1/2))/14

Answered by Matthew P. Maths tutor

2811 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Rearrange the following to make C the subject (3c+B)/2=C+A


There are 20 balls in a bag. The probability is 0.25 of picking a red ball. If one more red ball is added, what is the new probability of picking a red ball at random?


Solve (x+1)/3+(2x+5)/4=2


How to I factorise a quadratic equation?


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