Home
Class 7
MATHS
What should be added to x^2 + xy + y^2 t...

What should be added to `x^2 + xy + y^2` to obtain `2x^2 + 3xy`?

Promotional Banner

Topper's Solved these Questions

  • COMPARING QUANTITIES

    PSEB|Exercise EXAMPLE|126 Videos

Similar Questions

Explore conceptually related problems

What must be added to 3x^(2)-5x+7 to obtain 2x^(2)-8x+9 .

What should be taken away from 3x^2 – 4y^2 + 5xy + 20 to obtain – x^2 – y^2 + 6xy + 20 ?

Factorise : (x^2 – 2xy + y^2) – z^2

Find dy/dx when 2x^2 - 3xy + 4y^2 = 5

Adjacent sides of the rectangle are 2x^(2) + 10 xy + 3y ^(2) and x ^(2) - 2 xy + 1, find its area.

Find (dy)/(dx) if xy^2 + y^2 = tan x + y

Simplify : (x + y)(x^2 – xy + y^2)

Add: 4x^2y, – 3xy^2, –5xy^2, 5x^2y

PSEB-Algebraic Expressions-EXAMPLE
  1. Subtract: 5a^2 – 7ab + 5b^2 from 3ab – 2a^2 – 2b^2

    Text Solution

    |

  2. Subtract: 4pq – 5q^2 – 3p^2 from 5p^2 + 3q^2 – pq

    Text Solution

    |

  3. What should be added to x^2 + xy + y^2 to obtain 2x^2 + 3xy?

    Text Solution

    |

  4. What should be subtracted from 2a + 8b + 10 to get – 3a + 7b + 16?

    Text Solution

    |

  5. What should be taken away from 3x^2 – 4y^2 + 5xy + 20 to obtain – x^2 ...

    Text Solution

    |

  6. From the sum of 3x – y + 11 and – y – 11, subtract 3x – y – 11.

    Text Solution

    |

  7. From the sum of 4 + 3x and 5 – 4x + 2x^2, subtract the sum of 3x^2 – 5...

    Text Solution

    |

  8. Find the values of the following expressions for x = 2. x + 4

    Text Solution

    |

  9. Find the values of the following expressions for x = 2. 4x – 3

    Text Solution

    |

  10. Find the values of the following expressions for x = 2. 19 – 5x^2

    Text Solution

    |

  11. Find the values of the following expressions for x = 2. 100 – 10x^3

    Text Solution

    |

  12. Find the value of the following expressions when n = – 2. 5n – 2

    Text Solution

    |

  13. Find the value of the following expressions when n = – 2. 5n^2 + 5n –...

    Text Solution

    |

  14. Find the value of the following expressions when n = – 2. n^3 + 5n^2 +...

    Text Solution

    |

  15. Find the value of the following expressions for a = 3, b = 2. a + b

    Text Solution

    |

  16. Find the value of the following expressions for a = 3, b = 2. 7a – 4b

    Text Solution

    |

  17. Find the value of the following expressions for a = 3, b = 2. a^2 + 2...

    Text Solution

    |

  18. Find the value of the following expressions for a = 3, b = 2. a^3 – b^...

    Text Solution

    |

  19. If m = 2, find the value of: m – 2

    Text Solution

    |

  20. If m = 2, find the value of: 3m – 5

    Text Solution

    |