If x = 3+√ 8 find x 2 + 1/x 2 (with steps and method )
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x2+1/x2= (x+1/x)2 + 2 * x * 1/x
x+1/x=( 9+8+6√8)/(3+√8)
x2+1/x2=(17+6√8)(3+√8)+2
=(17+6√8+6+2√8)/(3+√8)
=(23+8√8)/(3+√8)
x+1/x=( 9+8+6√8)/(3+√8)
x2+1/x2=(17+6√8)(3+√8)+2
=(17+6√8+6+2√8)/(3+√8)
=(23+8√8)/(3+√8)
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