Complete the square for the quadratic expression x^2 − 8x + 7

As the coefficient (the number before) of x2 is 1 we can start the expression with (x...The coefficient of x is -8 so we half this to complete the brackets and form (x-4)2...Next the square of -4 is subtracted as this will form a remainder when the brackets are expanded (x-4)2-16Finally 7 is added to the expression to form (x-4)2-9

MB
Answered by Megan B. Maths tutor

4614 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

make a the subject of p = (3a+5)/(4-a)


Write 144 as a product of its prime factors


What are the differences between arithmetic and geometric sequences?


A straight line passes through the point (0, 6) and is perpendicular to y = 4x - 5. Find the equation of this line, giving your answer in the form y = mx + c .


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