show that (3-√5) is an irrational number
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Answer:
3-✓5 is an irrational number.
Step-by-step explanation:
let, 3-✓5 = p/q [where p and q are co-prime no.]
✓5 = p/q+3
We know that ✓5 is a irrational number but p/q-3 is a rational number.
We also know that irrational number is not equal to rational number. Therefore we say that 3-✓5 is a irrational number.
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