show that 7 + 2√
is also an irrational number.
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Step-by-step explanation:
According to solution √2=r²-57÷28 which means √2 is rational. But it contradicts the fact that √2 is irrational. Hence 7-2√2 is irrational.
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here √2 is irrational therefore 7+√2 is also irrational
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