Question

Please answer fast
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Answer 1

Answer:

125

Step-by-step explanation:

y-1/y=5

so,

=y3 - 1/y3

=(y-1/y)^3

=(5)^3

=125

3 or ^3 means cube

Answer 2

Answer:

$\rm[tex]\rm\huge\pink\star\underline\mathfrak\purple{Solution :- }$

Step-by-step explanation:

$y - \frac{1}{y} = 5$

${y}^{3} - \frac{1}{ {y}^{3} } = ....$

1 can be written as 1^3 i.e, :-

${y}^{3} - ( { \frac{1}{y} )}^{3} = will \: be \: {5}^{3}$

$\rm\huge\pink\star\underline\mathfrak\purple{ 125 }$