1- Is -3-6 irrational2- Is -3 -8 irrational3- 4-3 irrational4- -10 multiply -40

1. Yes since it is equal to 3+√(3)×√(2) 2. √(8) is irrational since it is equal to 2 ×√(2) 3. Yes. Since √(3) is irrational 4. √(10)×√(40)=√(10)× 2 √(10) = ...

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Byju's Answer

Standard IX

Mathematics

Operations on Rational and Irrational Numbers

1. Is -3+√6 i...

Question

1. Is $- 3 + \sqrt{6}$ irrational
2. Is $- 3 \times \sqrt{8}$ irrational
3. $\frac{4}{\sqrt{3}}$ irrational
4. $\sqrt{10}$ multiply $\sqrt{40}$

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Solution

1. Yes since it is equal to $- 3 + \sqrt{3} \times \sqrt{2}$
2. $\sqrt{8}$ is irrational since it is equal to $2 \times \sqrt{2}$
3. Yes. Since $\sqrt{3}$ is irrational
4. $\sqrt{10} \times \sqrt{40} = \sqrt{10} \times 2 \sqrt{10} = 2 \times 10 = 20 \to$ rational

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1. Is −3+√6 irrational 2. Is −3×√8 irrational 3. 4√3 irrational 4. √10 multiply √40

1. Yes since it is equal to −3+√3×√2 2. √8 is irrational since it is equal to 2×√2 3. Yes. Since √3 is irrational 4. √10×√40=√10×2√10=2×10=20→ rational

1. Is $- 3 + \sqrt{6}$ irrational
2. Is $- 3 \times \sqrt{8}$ irrational
3. $\frac{4}{\sqrt{3}}$ irrational
4. $\sqrt{10}$ multiply $\sqrt{40}$

1. Yes since it is equal to $- 3 + \sqrt{3} \times \sqrt{2}$
2. $\sqrt{8}$ is irrational since it is equal to $2 \times \sqrt{2}$
3. Yes. Since $\sqrt{3}$ is irrational
4. $\sqrt{10} \times \sqrt{40} = \sqrt{10} \times 2 \sqrt{10} = 2 \times 10 = 20 \to$ rational