Math, asked by Sourasnata, 1 year ago

Factorize............

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Answered by mysticd
2
Solution :

2( a² + 1/a² ) - ( a - 1/a ) - 7

= 2( a² + 1/a² -2 + 2 ) - ( a - 1/a ) - 7

= 2[ ( a - 1/a )² + 2 ] - ( a - 1/a ) - 7

= 2( a - 1/a )² + 4 - ( a - 1/a ) - 7

= 2( a - 1/a )² - ( a - 1/a ) - 3

= 2( a - 1/a )² -3( a - 1/a ) + 2( a - 1/a ) - 3

= ( a - 1/a )[2( a - 1/a ) - 3 ] + 1[2(a-1/a)-3]

= [ 2(a-1/a) - 3 ] ( a - 1/a + 1 )

= [ 2a - 2/a - 3 ] ( a - 1/a + 1 )

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