Tìm x

Tìm x.
a) 2(x-1)^2 + (x+3)^2= 3(x-2)(x+1)
b)(x+2)^2 - 2(x-3)=(x+1)^2
c)(x-1)^2 +(x-2)^2 = 2(x+4)^2- (22x+27)