Solve the quadratic equation 4x^2 - 5x -6 = 0

First factorise the equation : you need to find two value which multiply to give (4 x -6) = -24 and add to equal -5,these two numbers are -8 and 3. Then write the equation as follows:4x2 - 8x +3x - 6 =0 We can then factorise each side 4x(x-2) + 3(x - 2) = 0 both have a common factor of (x-2) and so the overall factorisation is (4x+3)(x-2) = 0 Giving us the solution of x=2 or x = -3/4

KS
Answered by Katie S. Maths tutor

8321 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Differentiate the equation 3x^4+6x^2-7x+2


Rearranging algebraic formula- make a the subject of the formula.


How do I know whether to use sin, cos, or tan in trigonometry?


Solve the simultaneous equations: a) 2x + y = 18, b) x - y = 6


We're here to help

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

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning