if x-1/x=4 find the value of x square +1/x square
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given x–1/x = 4
now by squaring on both sides
x^2+1/x^2–2(x*1/x) = 4^2
x^2+1/x^2–2(1) = 16
x^2+1/x^2 = 16+2 = 18
hence x^2+1/x^2 = 18
now by squaring on both sides
x^2+1/x^2–2(x*1/x) = 4^2
x^2+1/x^2–2(1) = 16
x^2+1/x^2 = 16+2 = 18
hence x^2+1/x^2 = 18
abhishek179:
give me answer
the answer is 18
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