How do I factorise and solve 2x^2+4x-6=0?

The 2 in front of the x^2 can cause confusion. In this case, the equation can be divided through by 2, to produce x^2+2x-3=0. From here it can be factorised by working out what adds to make '2' and times to make '-3'. The answer is -1 and 3. The equation can be factorised as (x-1)(x+3)=0. As the equation equals zero, one or both of the brackets must equal zero too. therefore; x-1=0 means x=1 and x+3=0 means x=-3.

MR
Answered by Madeleine R. Maths tutor

9568 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

A line has equation y = 3x + 4, write down the gradient of the line.


How do you calculate the sine, cosine and tangent values for 45 degrees without a calculator?


How do you factorise a quadratic? Something like x^2 + 4x + 3


Simplify and then solve by factorisation 3x(x+2)-7=2, to find x.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences