Question

x+1/x=4 find x sq +1/x sq solve​

Answer 1

x+1/x=4

whole squaring both sides we get

(x+1/x)²=4²

x²+1/x²+2*x*1/x=16

x²+1/x²+2=16

x²+1/x²=16-2

x²+1/x²=14

Answer 2

$\huge{\mathfrak{\green{Answer}}}$

$( x+ \frac{1}{x} ) {}^{2} = x {}^{2} + \frac{1}{ {x}^{2} } + 2(x)( \frac{1}{x} ) \\ (4) {}^{2} = x {}^{2} + \frac{1}{x {}^{2} } + 2 \\ 16 - 2 = x {}^{2} + \frac{1}{x {}^{2} } \\ 14 = x {}^{2} + \frac{1}{ {x}^{2} }$

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