prove that 5 - 2/7 √3 is irrational no.
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5 - 2/7 √3
= 3/7√3
= 3/7√3 . 7√3/7√3
= 3 (7√3) / 49. 3
= 3 (7√3) / 147
= 1/49 (7√3)
= 3/7√3
= 3/7√3 . 7√3/7√3
= 3 (7√3) / 49. 3
= 3 (7√3) / 147
= 1/49 (7√3)
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