Question

show that 3√2 - 2√5 is an irrational number




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Answer 1

Answer:

we know the fact that_/2 and_/5are irrational

so 3_/2&2_/5 are irrational ( multiplication of rational and irrational no. is irrational

so, the subtract of two irrational no can't be rational till there radicals value are same

thus the above is irrational