if m-1/m=5 find :- m²-1/m²
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Hi ,
m - 1/m = 5 ----( 1 )
( m + 1/ m )² = ( m - 1/m )² + 4
= 5² + 4
= 29
m + 1/m = ± √29 -----( 2 )
multiply ( 1 ) and ( 2 ), we get
( m - 1/ m ) ( m + 1/m ) = 5 × ( ±29 )
m² - 1/m² = ± 145
I hope this helps you.
:)
m - 1/m = 5 ----( 1 )
( m + 1/ m )² = ( m - 1/m )² + 4
= 5² + 4
= 29
m + 1/m = ± √29 -----( 2 )
multiply ( 1 ) and ( 2 ), we get
( m - 1/ m ) ( m + 1/m ) = 5 × ( ±29 )
m² - 1/m² = ± 145
I hope this helps you.
:)
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