Math, asked by randhawaharjeetkaur8, 7 hours ago

which of the following is not an irrational number
a) 7√5 b)√2+2√2 c) (√7-3)-√7 d) √3+2

Answers

Answered by brainlysrijanuknown2
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 Hansika4871
2

(\sqrt{7}- 3) - \sqrt{7} 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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