Question

prove that 3 - 2 \sqrt{5} is irrational..​

Answer 1

Answer:

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Answer 2

Answer:

So 3+2√5 = a/b where a,b are integers and are co primes and b is not equal to 0.

=> √5 is rational which is a contradiction since √5 is irrational.

So our assumption that 2+3√5 is rational is wrong.

✓ So 2+3√5 is irrational.

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