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Rationalise the denominator of (1)/(4+sq...

Rationalise the denominator of `(1)/(4+sqrt5)`

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The correct Answer is:
`(4-sqrt5)/(11)`
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NCERT GUJARATI-REAL NUMBERS-EXERCISE - 1.4
  1. Rationalise the denominator of (1)/(4+sqrt5)

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  2. Simplify the following expressions. (5+sqrt7)(2+sqrt5)

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  3. Simplify the following expressions. (5+sqrt5)(5-sqrt3)

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  4. Simplify the following expressions. (sqrt3+sqrt7)^(2)

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  5. Simplify the following expressions. (sqrt(11)+sqrt7)(sqrt(11)+sqrt7)

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  6. Classify the following numbers as rational or irrational. 5-sqrt3

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  7. Classify the following numbers as rational or irrational. sqrt3+sqrt...

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  8. Classify the following numbers as rational or irrational. (sqrt2-2)^...

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  9. Classify the following numbers as rational or irrational. (2sqrt7)/(...

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  10. Classify the following numbers as rational or irrational. 2pi

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  11. Classify the following numbers as rational or irrational. (1)/(sqrt3...

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  12. Classify the following numbers as rational or irrational. (2+sqrt2)(...

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  13. In the following equations, find whether variables x, y, z etc. repres...

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  14. In the following equations, find whether variables x, y, z etc. repres...

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  15. In the following equations, find whether variables x, y, z etc. repres...

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  16. In the following equations, find whether variables x, y, z etc. repres...

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  17. In the following equations, find whether variables x, y, z etc. repres...

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  18. In the following equations, find whether variables x, y, z etc. repres...

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  19. Every surd is an irrational, but every irrational need not be a surd. ...

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  20. Rationalise the denominators of the following: (1)/(3+sqrt2)

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  21. Rationalise the denominators of the following: (1)/(sqrt7-sqrt6)

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