Home
Class 8
MATHS
Simplify the following by using (a+b)(a-...

Simplify the following by using `(a+b)(a-b)=a^2-b^2dot` (i)`68 xx 72` (ii) `101 xx 99` (iii)`67 xx 73` (iv) `128^2-77^2`

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • COMPOUND INTEREST

    RD SHARMA ENGLISH|Exercise All Questions|130 Videos

Similar Questions

Explore conceptually related problems

Simplify the following using the formula: (a-b)(a+b)=a^2-b^2: 113 xx\ 87 (ii) 95 xx 105

Simplify the following using the formula: (a-b)(a+b)=a^2-b^2: 1. 8 xx 2.2 (ii) 9. 8 xx 10.2

Simplify the following: 3(a^4b^3)^10xx5(a^2b^2)^3

Simplify the following using the formula: (a-b)(a+b)=a^2-b^2: (i) (79)^2-(69)^2 (ii) 197\ xx\ 203

Simplify the following using the formula: (a-b)(a+b)=a^2-b^2: (i) (82)^2-(18)^2 (ii) (467)^2-(33)^2

Evaluate each of the following by using identities: (i) 103\ xx\ 97 (ii) 103\ xx\ 103 (iii) (97)^2

Simplify the following using the identities: (58^2-42^2)/(16) (ii) 178\ xx\ 178\ -22\ xx\ 22

Use the formula : (a+b) (a-b) = a^(2) - b^(2) to evaluate : (iii) 103 xx 97

Simplify each of the following expression: (i) 8 xx (3+7) (ii) (7-2) xx (12+8) (iii) 23+9 xx (6-3)-20

Use the formula : (a+b) (a-b) = a^(2) - b^(2) to evaluate : (iv) 9.8 xx 10.2

RD SHARMA ENGLISH-ALGEBRAIC EXPRESSIONS AND IDENTITIES-All Questions
  1. If a^2+b^2+c^2-a b-b c-c a=0,\ p rov e\ t h a t\ a=b=c

    Text Solution

    |

  2. Using the formulae for squaring a binomial, evaluate the following ...

    Text Solution

    |

  3. Simplify the following by using (a+b)(a-b)=a^2-b^2dot (i)68 xx 72 (i...

    Text Solution

    |

  4. Find the value of x , if 6x=23^2-17^2

    Text Solution

    |

  5. Find the value of x , if 4x=98^2-88^2

    Text Solution

    |

  6. Find the value of x , if 25 x=536^2-136^2

    Text Solution

    |

  7. What must be added to 9x^2-24 x+10 to make it a whole square?

    Text Solution

    |

  8. Write the following squares of binomials as trinomials: (x+2)^2 (i...

    Text Solution

    |

  9. Write the following squares of binomials as trinomials: (x+(x^2)/2)...

    Text Solution

    |

  10. Write the following squares of binomials as trinomials: ((3a)/2-(5...

    Text Solution

    |

  11. Find the product of the following binomials; (i)(2x+y)(2x+y) (ii...

    Text Solution

    |

  12. Find the product of the following binomials; (i) (a^2+b c)(a^2-b c) ...

    Text Solution

    |

  13. Find the product of the following binomials; (i)(2x+3/y)(2x-3/y) ...

    Text Solution

    |

  14. Find the product of the following binomials; (i)(x^4+2/(x^2))(x^4-2/...

    Text Solution

    |

  15. Using the formula for squaring a binomial , evaluate the following:...

    Text Solution

    |

  16. Using the formula for squaring a binomial , evaluate the following:...

    Text Solution

    |

  17. Simplify the following using the formula: (a-b)(a+b)=a^2-b^2: (i)(82...

    Text Solution

    |

  18. Simplify the following using the formula: (a-b)(a+b)=a^2-b^2: (i) (7...

    Text Solution

    |

  19. Simplify the following using the formula: (a-b)(a+b)=a^2-b^2: 113 xx\...

    Text Solution

    |

  20. Simplify the following using the formula: (a-b)(a+b)=a^2-b^2: 1. 8 xx...

    Text Solution

    |