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Prove that (sqrt2+1)(sqrt2-1)=1. Use thi...

Prove that `(sqrt2+1)(sqrt2-1)=1`. Use this to compute `frac(1)sqrt(2-1)`.Correct two decimal places.

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V PUBLICATION-New Numbers-QUESTION BANK
  1. Simplify a) sqrt24 sqrt6 b)sqrt7 sqrt4 sqrt8 c) sqrt21 sqrt15 sqrt35...

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  2. Calculate the length of the sides of the equilateral triangle on the r...

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  3. Prove that (sqrt2+1)(sqrt2-1)=1. Use this to compute frac(1)sqrt(2-1)....

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  4. Compute frac(1)(sqrt2+1) correct two decimal places.

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  5. Simplify (sqrt3-sqrt2)(sqrt3+sqrt2) Using this compute 1/(sqrt3-...

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  6. Prove that sqrtx2 \2\3=2 \sqrtx\2\3 and sqrtx3 \3\8=3 \sqrtx3\8Can you...

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  7. All black triangles in the picture are equilateral. What is the rati...

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  8. Using sqrt3= 1.73, find sqrt3/4 correct to three decimals.

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  9. Using sqrt10 = 3.162, compute 1/sqrt10 correct to three decimals.

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  10. Using sqrt6= 2.449, calculate sqrt(2/3)+sqrt(3/2) correct to three dec...

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  11. Compute √12 - √3 upto two decimals.

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  12. Given sqrt2 = 1.414, find the approximate value of 3/sqrt2 to three de...

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  13. Using sqrtx2 \approx 1.414, \sqrtx3=1.732 . Calculate the value of the...

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  14. In the picture A B C is an equilateral triangle. BC=5cm. Find the area...

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  15. In the figure, angle B=120circ, angle A=15^circ, A B=10 centimeters. A...

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  16. a) sqrt3 sqrt3= b) What is the product of(sqrt3+sqrt2 andsqrt3-sqrt2)...

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  17. In the figure, angle A=30^circ,angle B=90^circ, A C=16cm (a) What is ...

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  18. a)sqrt7sqrt7= b) sqrt7+sqrt7=

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  19. a) Find the area and perimeter of the rectangle in the figure. b) What...

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  20. (sqrtx3+sqrtx2)(\sqrt{3}-sqrtx2)=(sqrtx3)^2-(sqrtx2)^2=3-2=1Using this...

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