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Pprove that 2 root 3 + 5 is irrational number |
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Answer» Let X=2−3 5 be a RATIONAL number.3 5 =2−x5 = 32−x SINCE x is rational, 2-x is rational and hence 32−x is also rational number⇒ 5 is a rational numbers, which is a contradiction.Hence 2−3 5 MUST be an irrational number. |
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