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Home
Class 9
MATHS
Factorise : a^(3) - 27...

Factorise :
`a^(3) - 27`

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Text Solution

Verified by Experts

The correct Answer is:
`(a-3)(a^(2)+3a+9)`
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Factorise : (i) a^(3)+27b^(3)+8c^(3)-18abc " " (ii) 2sqrt(2)a^(3)+8b^(3)-27c^(3)+18sqrt(2)abc (iii) x^(3)+y^(3)-12xy+64 " " (iv) 125-8x^(3)-27y^(3)=90xy .

ICSE-FACTORISATION-Exercise 5 (D)
  1. Factorise : a^(3) - 27

    01:52

    |

  2. Factorise : 1-8a^(3)

    01:06

    |

  3. Factorise : 64 - a^(3)b^(3)

    01:15

    |

  4. Factorise : a^(6) + 27b^(3)

    02:36

    |

  5. Factorise: (i) 3x^(7)y -81x^(4)y^(4) (ii) a^(3) + 0.064

    04:23

    |

  6. Factorise : a^(3) -(27/a^(3))

    01:08

    |

  7. Factorise : a^(3) + 0.064

    01:17

    |

  8. Factorise : a^(4) - 343 a

    01:33

    |

  9. Factorise : (x-y)^(3) - 8x^(3)

    02:31

    |

  10. Factorise : (8a^(3))/(27) - (b^(3))/(8)

    01:34

    |

  11. Factorise : a^(6) - b^(6)

    01:23

    |

  12. Factorise : a^(6) - 7a^(3) - 8

    02:05

    |

  13. Factorise : a^(3) - 27b^(3) + 2a^(2)b - 6ab^(2)

    01:45

    |

  14. Factorise : 8a^(3) - b^(3) - 4ax + 2bx

    01:31

    |

  15. Factorise : a-b - a^(3) + b^(3)

    01:23

    |

  16. Factorise : 2x^(3) + 54y^(3) - 4x - 12y

    01:47

    |

  17. Factorise : 1029 - 3x^(3)

    01:39

    |

  18. Show that: (i) 13^(3)-5^(3) is divisible by 8. (ii) 35^(3) + 27^(3...

    04:30

    |

  19. Show that : 35^(3) + 27^(3) is divisible by 62.

    02:04

    |

  20. Evaluate: (5.67 xx 5.67 xx 5.67 + 4.33 xx 4.33 xx 4.33)/(5.67 xx 5.6...

    01:39

    |

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