Question

x plus one by x is equal to four then find x square plus one by x square?​

Answer 1

Answer :

$x + \frac{1}{x} = 4 \\ \\ \text{on squaring both sides : } \\ \\ (x + \frac{1}{x} ) {}^{2} = (4) {}^{2} \\ \\ x {}^{2} + \frac{1}{x {}^{2} } + 2 = 16 \\ \\ x {}^{2} + \frac{1}{x {}^{2} } = 16 - 2 \\ \\ \red{ \boxed{ \bf x {}^{2} + \frac{1}{x {}^{2} } = 14}}$

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Answer 2

x+1/x=4

squaring both side

(x+1/x)^2 = 4^2

x^2 + 1/x^2 + 2 = 16

x^2 + 1/x^2=14

hope u got your answer

have nice day dude