Question 57

If $$x + y + z = 5, \frac{1}{x} + \frac{1}{y} + \frac{1}{z} = 0, xyz = 12$$ and $$x^3 + y^3 + z^3 = 151$$, then the value of $$(x^2 + y^2 + z^2)$$ is:


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