Tìm x biết: a) |x^2 + 2|x - 1/2|| = x^2 + 2; b) |x^2 + |x + 3/4|| = x^2; c) ||1/2x + 1| - 3/4| = 2/5

Tìm x biết:
a) |x^2 + 2|x - 1/2|| = x^2 + 2
b) |x^2 + |x + 3/4|| = x^2
c) ||1/2x + 1| - 3/4| = 2/5
d) |x|x^2 + 3/4|| = x
e) |x|x^2 - 3/4|| = x
g) ||x - 1/2||2x - 3/4|| = 2x - 3/4
f) |(x + 1/2)|2x - 3/4|| = 2x - 3/4