English, asked by ashwinrageshgmailcom, 1 year ago

if X square + 1 / x square is equal to 7 find the value of x square - 1 / x square

Answers

Answered by ravindradas15121977

2

see this answer it is right or wrong??

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Answered by nishu9915

2

X sq. +1/x sq. =7
1/x sq. =7-x sq.
-1/x sq.=-7+x sq.
then
X sq. -7+x sq.
=2X sq.-7

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