Home
Class 8
MATHS
If x=(4/5)^(-2)-:(1/4)^2, find the value...

If `x=(4/5)^(-2)-:(1/4)^2,` find the value of `x^(-1)dot`

Text Solution

Verified by Experts

If `x=(4/5)^(-2)-:(1/4)^2`
`=>x=25/16 xx 16/1`
`=>x=25`
Now, the value of `x^(-1)` will be `1/25`.
Promotional Banner

Topper's Solved these Questions

  • PLAYING WITH NUMBERS

    RD SHARMA|Exercise All Questions|57 Videos

  • PRACTICAL GEOMETRY (CONSTRUCTIONS)

    RD SHARMA|Exercise All Questions|40 Videos

Similar Questions

Explore conceptually related problems

If x=(3/2)^2x\ (2/3)^(-4),\ find the value of x^(-2)dot

If x =(3/2)^2x\ (2/3)^(-4), find the value of x^(-2)dot

Find the value of x if 2^x -2^(x-1) = 4

Find the value of 7 1/2=4/x

If x = ( 4^-1 - 5^-1 ) ÷ 3^-1 , find the value of x^-2

If x^(2)+(1)/(x^(2))=6 then find the value of x^(4)+(1)/(x^(4))

1/8 -(2x)/4 + 1 = 0 , find the value of x

If 1/(2!) + 1/(3!) = x/(4!) , find the value of x

If 5^(3x+2)=25xx5^((4x-1)) , find the value of x.

If x^2 + 1/x^2 = 6 , find the value of x^4 + 1/x^4

RD SHARMA-POWERS-All Questions
  1. Find x , if (8/3)^(2x+1)xx(8/3)^5=(8/3)^(x+2)

    Text Solution

    |

  2. If x=(3/2)^2xx\ (2/3)^(-4),\ find the value of x^(-2)dot

    Text Solution

    |

  3. If x=(4/5)^(-2)-:(1/4)^2, find the value of x^(-1)dot

    Text Solution

    |

  4. Find the value of x for which 5^(2x)-:5^(-3)=5^5dot

    Text Solution

    |

  5. Write the following numbers in standard form: (i)0. 4579 (ii) 0. 000...

    Text Solution

    |

  6. Express the following numbers in usual form. (i)

    Text Solution

    |

  7. Express the number appearing in the following statements in standard f...

    Text Solution

    |

  8. If the diameter of the Sun is 1.4xx10^9 m and that of Earth is 1.275xx...

    Text Solution

    |

  9. The size of a red blood cell is 0. 000007\ m and the size of a plant c...

    Text Solution

    |

  10. Express the following number in standard form: (i) 6020000000000000 ...

    Text Solution

    |

  11. Write the following numbers in the usual form: (i)4. 83\ xx\ 10^7 (i...

    Text Solution

    |

  12. Choose the correct alternative in each of the following : Square of...

    Text Solution

    |

  13. Cube of (-1)/2i s 1/8 (b) 1/(16) (c) -1/8 (d) (-1)/(16)

    Text Solution

    |

  14. Which of the following is not equal to ((-3)/5)^4? (a)((-3)^4)/(5^4) ...

    Text Solution

    |

  15. Which of the following is not reciprocal of (2/3)^4? (3/2)^4 (b) (...

    Text Solution

    |

  16. Which of the following numbers is not equal to (-8)/(27)?\ (a)(2/3)^...

    Text Solution

    |

  17. (2/3)^(-5) is equal to (a)((-2)/3)^5 (b) (3/2)^5 (c) (2xx-5)/3 ...

    Text Solution

    |

  18. ((-1)/2)^5x((-1)/2)^3 is equal to (a)((-1)/2)^8 (b) -\ (1/2)^8 ...

    Text Solution

    |

  19. ((-1)/5)^3-:((-1)/5)^8 is equal to (a) (-1/5)^5 (b) (-1/5)^(11) ...

    Text Solution

    |

  20. ((-2)/5)^7-:((-2)/5)^5 is equal to (a)4/(25) (b) (-4)/(25) (c) ...

    Text Solution

    |