Question

pls help me to sort out fasttt​

Answer 1

Answer:

142

Step-by-step explanation:

x+1/X=2

sq both sides

x²+1/x²+2=144

x²+1/x²=142

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Answer 2

$(x + \frac{1}{x} )^{2} = x^{2} +\frac{1}{x^{2} } +2\\\\(x + \frac{1}{x} )^{2} - 2 = x^{2} +\frac{1}{x^{2} } \\\\ x^{2} +\frac{1}{x^{2} } = 12^{2} -2 = 144 - 2 = 142$