Question

Prove that route7 is irrational​

Answer 1

Answer:

√7=a/b ( on squaring both sides). Here 7 divides a² so for it will also divide a . Here 7 divides b² so for 7 divides b. Here we find 7 is common which divide both a and b but this is contradiction because a and b are co prime they don't have common factor other than 1.

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