(3-√7)(3+√7) rational or irrational
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Answered by
6
(3-√7)(3+7)=(3)^2+√7^2.....by identity
9-7=2.
Thus it is rational.
Answered by
6
It is rational num.
Bcoz when we multiply its in form form (a-b)(a-b) that is a2 - b2.
Bcoz when we multiply its in form form (a-b)(a-b) that is a2 - b2.
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