giải pt
a) \(\left|2x-1\right|=x+3\)
b) \(\left|4x+7\right|=2x+5\)
c) \(\left|2x^2-3x-5\right|=5x-5\)
d) \(\left|x^2-4x-5\right|=4x-17\)
e) \(\left|x-2\right|=3x^2-x-2\)
f) \(\left|4x+1\right|=x^2+2x-4\)
g) \(\sqrt{x^2+6x+9}=\left|2x-1\right|\)