Solve the quadratic equation x^2 + 3x + 2 = 0, by factorisation.

We need two numbers, a and b, such that a*b = 2 and a+b=3Looking at the equation it can be seen that 2 and 1 fulfill these conditions.Therefore x2 +3x +2=0        = (x+2)(x+1)=0This means we need either x+2 or x+1 to equal 0 x+2=0 so x= -2 or x+1=0 so x= -1Therefore x= (-1 , -2)

SS
Answered by Sophie S. Maths tutor

6674 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

What is compound interest and how do I calculate it?


How can I find x and y?


There are 10 boys and 20 girls in a class. The class has a test. The mean mark for all the class is 60. The mean mark for the girls is 54. Work out the mean mark or the boys.


Integrate x^2 + 1/ x^3 +3x +2 using limits of 1 and 0


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