If(y-1/y)³=27,then find y³-1/y³.
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Answered by
11
Answer:
36
Step-by-step explanation:
(y- 1/y)^3=27
y-1/y=3
(y- 1/y)^3 = y^3- 1/y^3-3.y.1/y(y-1/y)
27=y^3-1/y^3-3×3
y^3- 1/y^3 =27+9=36
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