giải pt sau
a) \(2\left(x^2+8\right)=5\sqrt{x^3+8}\)
b) \(2\left(x^2-3x+2\right)=3\sqrt{x^2+8}\)
c) \(\sqrt{x^2-2x-15}=x-3\)
d) \(\sqrt{-x^2+6x-5}=8-2x\)
e) \(\sqrt{x^2-2x-8}=x-3\)
f) \(\left(x-3\right)\sqrt{x^2+4}=x^2-9\)
g) \(\sqrt{5x-1}-\sqrt{x-1}=\sqrt{2x-4}\)