Factorise 81xsquare-1
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hope it helps
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Mohit khairnar
regards
Mohit khairnar
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Answered by
1
Hey
Here is your answer,
= 81 x^2 - 1
= (9x)^2 - (1)^2
It is in the form of the equation (a)^2 - (b)^2 = (a+b) (a-b)
= ( 9x+1 ) ( 9x-1 )
Hope it helps you!
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