Solve for a, b, z
z=-5\text{, }a=-2\sqrt{5}\approx -4.472135955\text{, }b=-\sqrt{5}\approx -2.236067977
z=5\text{, }a=-2\sqrt{5}\approx -4.472135955\text{, }b=-\sqrt{5}\approx -2.236067977
z=-5\text{, }a=2\sqrt{5}\approx 4.472135955\text{, }b=\sqrt{5}\approx 2.236067977
z=5\text{, }a=2\sqrt{5}\approx 4.472135955\text{, }b=\sqrt{5}\approx 2.236067977
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