is the number (5+root3)(5-root3) a rational number
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it is rational bcz (5+√3)(5-√3)
=5^2-√3^2
=25-3
=21,which is a rational number.....
hope it helps.....
=5^2-√3^2
=25-3
=21,which is a rational number.....
hope it helps.....
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