which of the following is not an irrational number
a) 7√5 b)√2+2√2 c) (√7-3)-√7 d) √3+2
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Answered by
5
Answer:
Answer c
.The sum or difference between a rational number and an irrational number is always irrational.
but its is rational numbers
Answered by
2
is not an irrational number. Option C is the correct answer.
- An irrational number is defined as a number that cannot be converted into a fractional form.
- Irrational numbers cannot have a ( p/q) form.
- Irrational numbers are also called non-rational numbers
- 7√5 is an irrational number because the multiplication of an irrational number with a rational number gives an irrational number. Hence it is an irrational number.
- √2+2√2 is also an irrational number because the operation gives the result 3√2. 3√2 is an irrational number.
- (√7-3)-√7 is not an irrational number because the operation gives the result -3. -3 can be expressed in the p/q form as -(30/10), -(300/100), hence it is not an irrational number.
- √3+2 is an irrational number because the addition of a rational number with an irrational number gives an irrational number.
Therefore, Option C is the correct answer.
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