please help me

Dear student, 


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3.ii.after multiplying each term of first bracket frm second one and then subracting second from first.. Ans comes: x-1/x.. Actually my camera was not working.. Hope u got it.. 4.vi a6 - b6 =(a3) 2-(a3) 2 =(a3+a3) (a3-a3) =(a3+a3)(a2+b2-ab) (a3+a3)(a2+b2+ab)
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vi] a6- b6 = [ ( a3)2 - (b3)2 ]
               = [ a3 + b3 ][ a3 - b3 ]
               = [ a + b ][ a2 - ab + b][a3 - b3 ]
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What are you looking for?