Home
Class 8
MATHS
Find the value of x, if: (i) 4x=(52)^2-(...

Find the value of x, if: (i) `4x=(52)^2-(48)^2` (ii) `14 x=(47)^2-(33)^2` (iii) `5x=(50)^2-(40)^2`

Promotional Banner

Topper's Solved these Questions

  • COMPOUND INTEREST

    RD SHARMA ENGLISH|Exercise All Questions|130 Videos

Similar Questions

Explore conceptually related problems

Find values of x , if(i) |(2, 4),( 5, 1)|-|(2x,4),( 6,x)| (ii) |(2, 3),( 4, 5)|-|(x,3),( 2x,5)|

Find the value of the polynomial 5x-4x^2+3 at (i) x=0 (ii) x=-1 (iii) x=2

Find the values of x in each of the following : (i) 2^(5x)-:2^x=2^(20) (ii) (2^3)^4=(2^2)^x

Find the value of the polynomial 5x-4x^(2)+3 at : (i)x=0 " " (ii) x=-1 " " (iii) x=2

Find the values of x in each of the following : (i) 2^(5x)-:2^x=2^(20/5) (ii) (2^3)^4=(2^2)^x

Find the derivative (i) x^(1//3) (ii) (2)/(x^(3//2)) (iii) 3x^(-1//4)

Find the values of the following expressions for x=2. (i) x+4 (ii) 4x-3 (iii) 19-5x^2 (iv) 100-10x^3

Find the following products: (i) (y^2-4)(y^2-3) (ii) (x+4/3)(x+3/4) (iii) (3x+5)(3x+11) (iv) (2x^2-3)(2x^2+5)

If x=sqrt(2)+1 , then find the values of the following : (i)(1)/(x)" "(ii)x+(1)/(x)" "(iii)x-(1)/(x)" "(iv)x^(2)+(1)/(x^(2))

Find the values of x and y : (i) x+3i=6-9iy (ii) (x+iy)-(3-2i)=5+i (iii) i=x+2yi (iv) 4x+i(x-y)=2-5i (v) (x+2iy)(2-i)^(2)=10(1-i)

RD SHARMA ENGLISH-ALGEBRAIC EXPRESSIONS AND IDENTITIES-All Questions
  1. Simplify the following using the identities: (58^2-42^2)/(16) (ii) 1...

    Text Solution

    |

  2. Simplify the following using the identities: (198\ xx\ 198-102\ xx\ 1...

    Text Solution

    |

  3. Find the value of x, if: (i) 4x=(52)^2-(48)^2 (ii) 14 x=(47)^2-(33)...

    Text Solution

    |

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

    Text Solution

    |

  5. If x-1/x=3,\ find the values of x^2+1/(x^2)a n d\ x^4+1/(x^4)dot

    Text Solution

    |

  6. If x^2+1/(x^2)=18 , find the values of x+1/x and x-1/xdot

    Text Solution

    |

  7. If x+y=4\ a n d\ x y=2, find the values of x^2+y^2

    Text Solution

    |

  8. If x-y=7\ a n d\ x y=9, find the value of x^2+y^2

    Text Solution

    |

  9. If 3x+5y=11\ a n d\ x y=2, find the value of 9x^2+25 y^2

    Text Solution

    |

  10. Find the values of the following expressions: 16 x^2+24+9\ ,\ w h e ...

    Text Solution

    |

  11. If x+1/x=9. find the value of x^4+1/(x^4)dot

    Text Solution

    |

  12. If x+1/x=12 , find the value of x-1/xdot

    Text Solution

    |

  13. If 2x+3y=14\ a n d\ 2x-3y=2, find the value of x y . [Hint use (2x+3y...

    Text Solution

    |

  14. If x^2+y^2=29\ a n d\ x y=2, find the value of (i)x+y (ii) x-y

    Text Solution

    |

  15. What must be added to each of the following expressions to make it ...

    Text Solution

    |

  16. Simplify: (i)(x-y)(x+y)x^2+y^2)\ (x^4+y^4) (ii)(2x-1)\ (2x+1)(4x^2...

    Text Solution

    |

  17. Simplify: (m^2-n^2m)^2+2m^3n^2

    Text Solution

    |

  18. Show that : (3x+7)^2-84 x=(3x-7)^2 ...

    Text Solution

    |

  19. Show that : (4p q+3q)^2-(4q p-3q)^2=48 p q^2 (a-b)(a+b)+(b-c)(b+c)...

    Text Solution

    |

  20. Find the following products: (i) (x+2)(x+3) (ii)(x+7)(x-2) (iii...

    Text Solution

    |