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Which expression is not a rational number?
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Answer and explanation
Correct answer: (\sqrt{20}+\sqrt{45})
(\sqrt{20}+\sqrt{45}=2\sqrt{5}+3\sqrt{5}=5\sqrt{5}), which is irrational. In exams do not treat addition like multiplication.
Frequently asked questions
What is the correct answer to this question?
(\sqrt{20}+\sqrt{45})
Why is this the correct answer?
(\sqrt{20}+\sqrt{45}=2\sqrt{5}+3\sqrt{5}=5\sqrt{5}), which is irrational. In exams do not treat addition like multiplication.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Polynomials. Topic: Irrational numbers and real numbers.
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