Solve 3x^2 + 13x + 14 = 0

Firstly, you need factorise.a = 3 b = 13 c = 14Find 2 numbers which add to make b(13) and multiply to make ac(42). These numbers are 6 and 7You can now split up the x coefficient to: 3x^2 + 6x + 7x + 14. You can now factorise each "half" to get to: 3x(x+2) + 7(x+2)Factor out "x+2" to get (3x+7)(x+2) = 0So the solutions are x = -7/3 or x = -2

CW
Answered by Charles W. Maths tutor

5178 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Expand completely: (3a-6)(a+3)


solve the following equation: 7x + 8 = 2(6x -2)


Show that the lines y=3x+7 and 2y–6x=8 are parallel. Do not use a graphical method.


Factorise 7x +14


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:

© 2025 by IXL Learning