हल करना 7 ^ 2 + 1/(x ^ 2) = 79; x + 1/x = | Equatix - Math Solver

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3(r+2s)=2t-4

a⋅(b-2)=3b

3(r+2s)=2t-4

a⋅(b-2)=3b

Question

$$7^{2}+\frac{1}{x^{2}}=79; x+\frac{1}{x}=?$$