Factorise 2x^2+5x - 3

When factorising a quadratic expression the aim is to put the expression into brackets. Step 1: Label each expression as a b c2x2 = a 5x = b -3 = cStep 2: Multiply a with c number 2 * -3 = -6 Step 3: Know you need to find 2 numbers that multiply that will give you -6 and when you add it will give you b (5) X -> -6 + -> 5 -1 * 6 = -6-1 + 6 = 5 The two numbers for the factorisation is -1, 6Step 4: Replace b with -1 and 6 2x^2 -x +6x -3Step 5: Add the brackets (2x^2 -x) + (6x-3) Step 6: Simplify the brackets x(2x-1) + 3(2x-1)Step 7: The numbers in the brackets should be the same, put the into one bracket and the numbers outside the brackets should go into another bracket (2x-1)(x+3)

VA
Answered by Victoria A. Maths tutor

5039 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

An area of a garden needs to be tiled. It consists of a square area of 10m by 10m, with an outdoor pool in the middle of radius 3m. The tiles to be used are 50cm by 50cm, and cost 50p per tile. Find out how much it will cost to tile the area.


Solve 0=X^2 +5x +4


Simultaneous equations - Find the values of y and x: 3


Solve the following inequality: x^2 + x -12<0


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