solve: x^2= 4(x-3)^2

x^2= 4(x^2 - 6x + 9)

x^2= 4x^2- 24x + 36

3x^2 - 24x + 36= 0

(x-2)(x-6)=0

x= 2 or x=6

GK

Related Maths GCSE answers

All answers ▸

Solve algebraically the simultaneous equations: x^2 + y^2 = 25 and y - 3x = 13


Change of subject question. Make 'a' the subject of the formula v = u + at.


Please factorise fully: 2a^2 + 6a


If f(x) = 4x - 7 and f(c) = 9, find the value of c.