solve x^2 - x - 6 = 0

y = x2 - x - 6It is first important to realise that we are able to find the values of x when y = 0, that is where the parabola crosses the x axis. We can visually represent this and our solutions to the equation should match with this representationfirstly factorise the expression --> multiples of 6 include (2 and 3) and (6 and 1)Next see whether addition or subtraction of either pair forms the coefficient of x --> -1indeed 2 - 3 = -1so we write (x - 3)(x + 2) = 0then separate the brackets and put both equal to 0x - 3 = 0 and x + 2 = 0rearrange the equations to find our two values of x --> 3 and -2

HR
Answered by Harry R. Maths tutor

2301 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Solve the simultaneous equations: 4x + y = 25, x - 3y = 16


Solve the simultaneous equations: 1) 6a+b=11 , 2) 5a-2b=19


ABC is an isosceles triangle such that AB = AC A has coordinates (4, 37) B and C lie on the line with equation 3y = 2x + 12 Find an equation of the line of symmetry of triangle ABC. Give your answer in the form px + qy = r where p, q and are integers (5


Express 0.545454... as a fraction in its simplest form.


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