Solve by completing the square: x^2 - 8x + 12 = 0

x2 - 8x + 12 = 0 (x - 4)2 - 16 + 12 = 0 (x - 4)2 - 4 = 0 (x - 4)2 = 4 x - 4 = +- 2 x = 6 x = 2

JV
Answered by Julianna V. Maths tutor

3995 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

How do you factorise a quadratic equation where the coefficient of x^2 isn't 1?


Find the value of x when 2x^2 - x - 6 = 0


Solve the following fractional quadratic equation 14/(x^2-9)+1/(3-x)+(4-x)/(x+3)=7/(x+3), assuming x=/=+-3.


A ladder (length 314 cm) is leaning up against a wall. The length between the ladder and the wall is 1.54 m. At what angle is the ladder leaning up against the wall? Round your answer to 2 d.p.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning