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Without actually calculating the cubes ,...

Without actually calculating the cubes , find the value of the following.
`(28)^(3)+(-15)^(3)+(-13)^(3)`

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The correct Answer is:
16380
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SUBHASH PUBLICATION-POLYNOMIALS-EXERCISE 4.5
  1. Factorise : - 4x^(2) +9y^(2)+16z^(2)+12xy-24yz-16xz

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  2. Factorise : - 2x^(2)+y^(2)+8z^(2)-2sqrt(2)xy+4sqrt(2)yz-8xz

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  3. Write the following cubes in expanded form. (2x+1)^(3)

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  4. Write the following cubes in expanded form. (2a-3b)^(3)

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  5. Write the following cubes in expanded form. [3/2x+1]^(3)

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  6. Write the following cubes in expanded form. (x-2/3y)^(3)

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  7. Evaluate using the suitable identity. (99)^(3)

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  8. Evaluate using the suitable identity. (102)^(3)

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  9. Evaluate using the suitable identity. (998)^(3)

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  10. Factorise each of the following . 8a^(3)+b^(3)+12a^(2)b+6ab^(2)

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  11. Factorise each of the following . 8a^(3)-b^(3)-12a^(2)b+6ab^(2)

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  12. Factorise each of the following . 27-125a^(3)-135a+225a^(2)

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  13. Factorise each of the following . 64a^(3)-27b^(3)-144a^(2)b + 108ab^...

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  14. x+y+z=0 Show that x^(3)+y^(2)+z^(3)=3xyz

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  15. Without actually calculating the cubes , find the value of the followi...

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  16. Without actually calculating the cubes , find the value of the followi...

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  17. Give passible expressions for the length and breadth of each of the fo...

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  18. Give passible expressions for the length and breadth of each of the fo...

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  19. What are the possible expressions for the dimensions of the cuboids wh...

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  20. What are the possible expressions for the dimensions of the cuboids wh...

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