if a +1/a= 3 then find the value of
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Heya
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1)®® a + 1/a = 3
SQUARING BOTH SIDE'S
( a +1/a )² = 9
=>
a² + 1/a² + 2 = 9
=>
a² +1/a² = 7
2)®® a⁴ + 1/a⁴ = ( a² + 1/a² )² -2
=>
{ a⁴ + 1/a⁴ } = ( 7 )² - 2
=>
{ a⁴ + 1/a⁴ } = 47
_______________________________
1)®® a + 1/a = 3
SQUARING BOTH SIDE'S
( a +1/a )² = 9
=>
a² + 1/a² + 2 = 9
=>
a² +1/a² = 7
2)®® a⁴ + 1/a⁴ = ( a² + 1/a² )² -2
=>
{ a⁴ + 1/a⁴ } = ( 7 )² - 2
=>
{ a⁴ + 1/a⁴ } = 47
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