Question

If x=7+5√2 then find vàlue of (x2+1/x2)​

Answer 1

Answer:

I have attached above the solution

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Answer 2

Answer:

answer is 169.005

Step-by-step explanation:

x=7+5√2

$x^{2}$+$1/x^{2}$

substitute in the eqution

(7+5√2)2+1/(7+5√2)2

($a+b^{2}$)=$a^{2}$+$b^{2}$+2ab

$(7)^{2}$+(5√2)2+2x7x5√2+1/$(7)^{2}$+(5√2)2+2x7x5√2

49+50+70+1/49+50+70

169+1/169

28562/169

so the answer is 169.005