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

MP
Answered by Matthew P. Maths tutor

2978 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

2(y+3) = 10. What is y?


The point P has coordinates (3, 4) The point Q has coordinates (a, b) A line perpendicular to PQ is given by the equation 3x + 2y = 7 Find an expression for b in terms of a


If a=2 and b=3 , find the value of 2(a−b)+3(a+b)


Ian earns £420 a week after a 5% rise. What was his pay before?


We're here to help

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

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences