Solve this quadratic equation by factorising: x^2-x-6=0

In order to solve this equation (x2-x-6=0) using the factorising method, you should first find the two numbers that mutiply to -6 and add to -1. The two numbers that do this are 2 and -3. Therefore, (x+2) (x-3)=0. The values of x should be calculated where the brackets are multiplied to equal zero. This means that (x+2)=0 or (x-3)=0. Therefore x=-2 or x=3. In order to check if the calculations are correct, substitute the x values back into the original quadratic formula where it should equal zero.

Answered by Arrthe N. Maths tutor

2719 Views

See similar Maths 11 Plus tutors

Related Maths 11 Plus answers

All answers ▸

I want to pave my patio, which has dimensions of 6m by 8m. I'm going to pave it with stones that have dimensions of 50cm by 50cm. Each tile costs £1.50. How much will paving my patio cost me?


Write these fractions from smallest to largest 1/4 , 2/3, 1/2, 2/6


67,854 people went to a football match. What is this number rounded to the nearest thousand?


There are 13 apples in a crate of apples. Mark orders six boxes of apples, how many apples did he order?


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 2013–2024

Terms & Conditions|Privacy Policy
Cookie Preferences