Expand and simplify (x-7)^2

  1. Write out the question fully like so: =(x-7)(x-7) 2. Expand the brackets using the FOIL method. i.e First Outer Inner Last or the Crab Claw Method You should get: = x^2 - 7x - 7x + 49 Be careful with signs, remember that a negative number multiplied by a negative number makes a positive number 3. Collect terms together i.e. simplify = x^2 - 14x + 49
AC
Answered by Aisling C. Maths tutor

28014 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

What do I need the Pythagoras theorem for?


The area of a parallelogram is given by the equation 2(x)^2+7x-3=0, where x is the length of the base. Find: (a) The equation of the parallelogram in the form a(x+m)^2+n=0. (b) The value of x.


Simplify (48)^(1/2)


A right-angled triangle has an angle of 30 degrees and its hypotenuse has a length of 9cm. Find the length of either of the triangle's other two sides.


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