Solve for k
k=x^{2}+273
Solve for x (complex solution)
x=-\sqrt{k-273}
x=\sqrt{k-273}
Solve for x
x=\sqrt{k-273}
x=-\sqrt{k-273}\text{, }k\geq 273
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k=x^{2}+273
Multiply x and x to get x^{2}.
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