(3-root11)(3+root11)
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(3-root11)(3+root11)
by using identity (a+b)(a-b)= a^2-b^2
=(3)^2 - (root11)^2
=9-11
= -2
Here is ur answer dear
by using identity (a+b)(a-b)= a^2-b^2
=(3)^2 - (root11)^2
=9-11
= -2
Here is ur answer dear
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