Examine whether the following numbers are rational or irrational b, (3+√2)(3-√2
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Step-by-step explanation:
(3+√2)(3-√2). =>(a+b)(a-b)=a²-b²
=3²-(√2)²
=9-2
=7
where 7 is a rational number.
So (3+√2)(3+√2) is a rational number.
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