Solve x^2 + x=12 by factorising

Start off with:x2+x=12Subtract 12 from both sides:x2+x-12=0Factorise:(x-3)(x+4)=0Solution is therefore:x=3 or x=-4

DB
Answered by Duwan B. Maths tutor

2798 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

Given that y =2x^3 + 3/(x^2), find a) dy/dx and b) the integral of y


Where does the circle (x-6)^2+(y-7)^2=4 intersect with y=x+3


integrate 1+ln(x) with respect to x


how do integrate an equation with a surd or a fraction?


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