If x2+1/x2=18 then find the value of
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putting x²=s
now equation becomes
s+1/s=18
or s²+1=18s
or s²-18s+1=0
ors=[18±√{324-4}]/2
or. s= 9±√80
or x=SQUARE root of 9±√80
now equation becomes
s+1/s=18
or s²+1=18s
or s²-18s+1=0
ors=[18±√{324-4}]/2
or. s= 9±√80
or x=SQUARE root of 9±√80
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