Where does the graph x^2-3x-4 cross the x axis?

First, you need to factorise the quadratic:x2-3x-4=0(x-4)(x+1)=0Then, set each of the brackets to equal 0 and solve for x:x-4=0 --> x = 4x+1=0 --> x=-1

Answered by Sarah B. Maths tutor

1458 Views

See similar Maths KS3 tutors

Related Maths KS3 answers

All answers ▸

How can I factorise x^2 - 7x + 12?


Make F the subject from this equation: C = (F-32)*(5/9)


A triangle has the following dimensions: 5 km, 12 km and 13 m. Is it a right triangle?


Simplify 23/5 into a mixed number 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