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.

Answered by Madeleine R. Maths tutor

7079 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

p^2 x p^2


Bananas cost 30p each. Oranges cost 45p each. Write an expression, in pence, for the cost of x bananas and y oranges..


Solve the following simultaneous equations. x^2 + 2y = 9, y = x + 3


How do I factorise quadratic equations?


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