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Question

Factorise x2+1x2-3


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Solution

Factorise the given expression :

The given expression is

x2+1x2-3=x2+1x2-2-1=x2+1x2-2(x)(1x)-1=x-1x2-12

using identity a2-b2=(a+b)(a-b)

=x-1x+1x-1x-1

Hence the answer is x-1x+1x-1x-1


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