1 Answers
(y-1/y)(y+1/y)=2*root8
=> y2-1/y2=4root2
এখন,
y6-1/y6
= (y2)3-(1/y2)3
= (y2-1/y2)3+3*y2*1/y2(y2-1/y2)
= (4root2)3+3*4root2
= 128root2+12root2
= 140root2
= root39200
=> y2-1/y2=4root2
এখন,
y6-1/y6
= (y2)3-(1/y2)3
= (y2-1/y2)3+3*y2*1/y2(y2-1/y2)
= (4root2)3+3*4root2
= 128root2+12root2
= 140root2
= root39200
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