How do you expand Double Brackets?

For this we will use the FOIL Method. This stands for Front, Outside, Inside, Last. This helps us to check that we have multipled everything. For example, lets use (x+1)(2x+3): Multiply the first terms: x2x = 2x^2 Multiply the Outside Terms: x3 = 3x Multiply the Inside Terms: 12x = 2x Finally Multiply the Last terms: 13 = 3 Then add each of these terms you have worked out: 2x^2 + 3x + 2x + 3 This simplifies to 2x^2 + 5x + 3 Lets try a different example together, such as (3x + 2)(4x -1)

Answered by Harry R. Maths tutor

3661 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

When do I use the sin rule and when do I use the cosine rule?


factorise x^2+5x+6=0 and find x


How do you solve this problem?


Clare buys some shares for $50x. Later, she sells the shares for $(600 + 5x). She makes a profit of x% (a) Show that x^2 + 90x − 1200 = 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