Find the interval for which x^2 - 7x + 10 </= 0

Factorise the quadratic by finding two numbers that add to make -7 and multiply to make 10. (i.e. -2 and -5). So x^2  -  7x +  10 = (x - 2)(x - 5) </= 0. Sketch the quadratic to see where it is negative or zero. Find that the interval is 2 </= x </= 5.

Answered by Lewis T. Maths tutor

6245 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

How do I factorise a quadratic equation?


Simplify the following, 125^-2/3


Rearrange the following, making c the subject: (3c + b)/2 = c + a


Solve the following simultaneous equations: 3y=7+5x (1) 9x=-7y-4 (2)


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