Write the equation x^2 + 6x - 40 = 0 in the form (x + a)^2 - b = 0 and then solve for x

(x2 + 6x + 9) - 49 = 0
(x + 3)2 - 49 = 0

then to solve

(x + 3)2 = 49
x + 3 = +-7
x = -10 or x = 4

Answered by Darragh S. Maths tutor

3487 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

How do you work out the length of one of the sides of a right-angled triangle given the other two?


(2x+3)/(x-4) - (2x-8)/(2x+1) = 1 Solve for x


Solve the simultaneous equations x^2 + y^2 =13 and x= y - 5.


simplfy x/3 + x/4


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