prove that √7 is an irrational and hence prove that 3 + 5 √ 7 is an irrational
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Answer:
as you know that
Step-by-step explanation:
as you know that root 7 is a irational.
therefore multiplication of rational and itrational is irrational
hence 5root 7 is irational
again 3 is rational whera as 5root7 is irational by earlier proof
again
sum of rational and irational is irational
so.it is irational
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