if X equal to 3 minus 2 root 2 find X square + 1 upon x square
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x = 3 - 2√2
x^2 + 1/x^2 = ?
x = (3 - 2√2)
1/x = 1/3-2√2 (After rationalising the denominator)
1/x = 3+2√2
(x + 1/x)^2 = x^2 + 1/x^2 + 2
(3-2√2 + 3+2√2)^2 = x^2 + 1/x^2 + 2
36-2 = x^2 + 1/x^2
34 = x^2 + 1/x^2
x^2 + 1/x^2 = ?
x = (3 - 2√2)
1/x = 1/3-2√2 (After rationalising the denominator)
1/x = 3+2√2
(x + 1/x)^2 = x^2 + 1/x^2 + 2
(3-2√2 + 3+2√2)^2 = x^2 + 1/x^2 + 2
36-2 = x^2 + 1/x^2
34 = x^2 + 1/x^2
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