Solve n^2+n-90=0 to find the value of n?

Using the quadratic formula with a calculator a=1 b=1 c=-90 answers are n=-10 and n=9Factorising (n-9)(n+10)=0 answers are n=-10 and n=9

Answered by Asher L. Maths tutor

7072 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

How do you expand (2x+9)^2?


Find the roots of 2x^2-5x-6=0 to 3dps


Show that the lines y=3x+7 and 2y–6x=8 are parallel. Do not use a graphical method.


Increase 32 million by 4%. Give your answer correct to the nearest million.


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