Expand the brackets: (3a+3)(a+4)

To expand this, we must multiply each term in both brackets separately and then add all of these terms together. First, multiply the first term in each of the brackets: 3a x a = 3a^2. Next multiply the first term in the first bracket by the second term in the second brackets: 3a x 4 = 12a. Next multiply the second term in the first brackets by the first term in the second: a x 4 = 4a. Lastly, multiply the second term in each of the brackets: 3 x 4 = 12. Now add these all up to get: 3a^2 + 12a + 4a + 12 = 3a^2 + 16a + 12

LB
Answered by Luke B. Maths tutor

3516 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

There are 200 students in Year 10. 110 are boys. There are 250 students in Year 11. 140 are boys. Which year has the greater proportion of boys?


How do i solve simultaneous equations?


Find the stationary points of y = x^3 -3x^2 - 9x +5


There are 300 students at a school who have been asked to attend assembly. 1/10 students are sat on chairs, 85% of students are sat on the floor, the rest do not attend assembly. How many students did not attend assembly?


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