Tìm x, biết: a) 2(x + 1)^2 + (x + 3)^2 = 3(x - 2)(x + 1); b) 4(2x + 1)^2 + (4x + 2)(2 - 6x) + (3x - 1)^2 = 0

Tìm x biết
a) 2(x + 1)^2 + (x + 3)^2 = 3(x - 2)(x + 1)
b) 4(2x + 1)^2 + (4x + 2)(2 - 6x) + (3x - 1)^2 = 0