Expand (x + 4) (x - 8)

Multiply the first x term by the second x term (explain that any number times by itself is itself squared) = x^2Multiply the non-x term of the first bracket by the x term of the second bracket and check postives and negatives = 4xMultiply the x term of the first bracket by the non-x term of the second bracket and check postives and negatives = -8xMultiply the non-x term of the first bracket by the non-x term of the second bracket and check postives and negatives = -32Check for like terms (the 4x and -8x are both multiplied by x once and so can be added together) = -4xAdd all the terms together and write out the answer = x^2 -4x -32

HH
Answered by Harry H. Maths tutor

7234 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

How do you factorise x^2 +5x+6?


What is the value of 64^(2/3)?


Prove that (4x–5)^2 – 5x(3x – 8) is positive for all values of x.


The straight line joining the points (1, -2a),(a, 1) has a gradient of 5, find the value of a


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