Question

if x^2-1/x=7 find x^2+1/x^2​

Answer 1

Step-by-step explanation:

$\frac{ {x}^{2} - 1 }{x} = 7 \\ \frac{x \times x - 1}{x} = 7 \\ x - 1 = 7 \\ x = 7 + 1 \\ x = 8 \\ = > find \: \frac{ {x}^{2} + 1 }{ {x}^{2} } \\ \frac{ {8}^{2} + 1 }{ {8}^{2} } = \frac{64 + 1}{64} = \frac{65}{64} (or)1.01$