Expand (x+3)(x+4)

When we come across questions like this, we expand by multiplying everything in the first bracket by everything in the second bracket. An easier way of doing this is rewriting the question like: x(3x+4) + 3(3x+4) and then we would expand these brackets out. The first bracket expands to 3x2+4x, and the second bracket expands to 9x+12. When we add up all the components we get 3x2+4x+9x+12. We must simplify this so we get, 3x2 +13x+12 which is our answer.

Answered by Greg C. Maths tutor

7343 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

32sqrt 2 = 2^a, find the value of a


If x^2 = 16, why isn't the answer just x = 4?


solve (2x+3)/(x-4) - (2x-8)/(2x+1) = 1 leave answer in fraction form


1iii) Solve 7/2x^2+13/4x+1=2


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 2013–2024

Terms & Conditions|Privacy Policy
Cookie Preferences