prove that 7-2root2 is irrational
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let 7-2√2 is rational number
so,
7-2√2 =p/q
2√2=7-p/q
√2=(7-p/q)1/2
but it contradict the fact that √2 is irrational
therefore 7-2√2 is irrational number
hope it helps you
so,
7-2√2 =p/q
2√2=7-p/q
√2=(7-p/q)1/2
but it contradict the fact that √2 is irrational
therefore 7-2√2 is irrational number
hope it helps you
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