Home
Class 8
MATHS
Factorize: (i)15 a b+15+9b+25 a (ii) n...

Factorize:
(i)`15 a b+15+9b+25 a`
(ii) `n-7+7l m-l m n`

Text Solution

Verified by Experts

Given:
`(i) 15 a b+15+9b+25 a`
`=>15ab+9b+15+25a`
`=>3b(5a+3)+5(3+5a)`
`=>(3b+5)(5a+3)`
(ii) `n-7+7l m-l m n`
`=> (n-7)+lm(7-n)`
`=>-1 (7-n)+lm(7-n)`
...
Promotional Banner

Topper's Solved these Questions

  • DIVISION OF ALGEBRAIC EXPRESSIONS

    RD SHARMA|Exercise All Questions|61 Videos

  • INTRODUCTION TO GRAPHS

    RD SHARMA|Exercise All Questions|31 Videos

Similar Questions

Explore conceptually related problems

Write the greatest common factor in each of the term. l ^(2) m ^(2) n, l m ^(2) n ^(2) , l ^(2) mn ^(2)

Describe the orbital with the following quantum numbers : (i) n = 1, l = 0 " " (ii) n = 2, l = 1, m = 0 (iii) n = 3, l = 2 " " (iv) n = 4, l = 1 (v) n = 3, l = 0, m = 0 " " (vi) n = 3, l = 1 .

Which of the following quantum number for orbitals in hydrogen atom has a greater energy of electrons ? (i) n=3,l=2 and m_(l) +1 (ii) n= 3 , l=2 and m_(l) = -1

The sides of a triangle are 11 c m ,\ 15 c m\ a n d\ 16 c mdot\ The altitude to the largest side is 30\ sqrt(7)\ c m (b) (15sqrt(7))/2\ c m (c) (15\ sqrt(7))/4c m\ (d) 30\ c m

Name the orbitals corresponding to given set of quantum numbers (i() n=3, l=2, m=+-2 (ii) n=4, l=0, m=0 (iii) n=3, l=1, m+-1 (iv) n=2, l=1, m=1

Which of the following sate of quantum numbers is not permissible for an electron in an atom? (i) n = 1,l = 1, m_(l) 0, m_(s) =+ 1//2 (ii) n = 3, l = 1, m_(1) =- 2, m_(s) =- 1//2 (iii) n =1, l = 1, m_(l) = 0, m_(s) =+ 1//2 (iv) n = 2, l = 0, m_(l) = 0, m_(s) = 1

Let R be a relation from N to N defined by R" "=" "{(a ," "b)" ":" "adot" "b in N and a=b^2 ). Are the following true? (i) (a ," "a) in R ," "for" "a l l" "a in N (ii) (a ," "b) in R ," "i m p l i e s" "(b ," "a) in R (iii) (a ," "

If f(x)=((x^(l))/(x^(m)))^(l+m)((x^(m))/(x^(n)))^(m+n)((x^(n))/(x^(l)))^(n+l) then f'(x) is equal to (a) 1 (b) 0 (c) x^(l+m+n) (d) none of these

RD SHARMA-FACTORISATION-All Questions
  1. Factorize each of the following algebraic expressions: (i) x^3(a-2...

    Text Solution

    |

  2. Factorize: (i)x^2+x y+8x+8y (ii) 15 x y-6x+10 y-4

    Text Solution

    |

  3. Factorize: (i)15 a b+15+9b+25 a (ii) n-7+7l m-l m n

    Text Solution

    |

  4. Factorize: (i) a x+b x+a y+b y, (ii) a x^2+b y^2+b x^2+a y^2, (iii)...

    Text Solution

    |

  5. Factorize: a^2+2a+a b+2b, x^2-x z+x y-x z

    Text Solution

    |

  6. Factorize each of the following expressions: (i)a^2-b+a ba (ii) x y-...

    Text Solution

    |

  7. Factorize each of the following expressions: (i) 6a b-b^2+12 a c-2b c...

    Text Solution

    |

  8. Factorize each of the following expressions: (i) a^2x^2+(a x^2+1)x+a...

    Text Solution

    |

  9. Factorize each of the following expressions: (i) a^3x+a^2(x-y)-a(y+z)...

    Text Solution

    |

  10. Factorize: (i) x^3-2x^2y+3x y^2-6y^3 (ii) 6a b-b^2+12 a c-2b c

    Text Solution

    |

  11. Factorize each of the following expressions: (1)q r-p r+q s-p s (2...

    Text Solution

    |

  12. Factorize each of the following expressions: (1)x a^2+x b^2-y a^2-y ...

    Text Solution

    |

  13. Factorize each of the following expressions: (1) a x y+b c x y-a z-b...

    Text Solution

    |

  14. Factorize each of the following expressions: (1) x^2-2a x-2b a+b x ...

    Text Solution

    |

  15. Factorize each of the following expressions: (1) 16(a-b)^3-24(a-b)^2...

    Text Solution

    |

  16. Factorize each of the following expressions: (1)a(a+b-c)-b c (2) x...

    Text Solution

    |

  17. Factorize: (i)9a^2-16 b^2 (ii) 36 a^2-(x-y)^2 (iii)80 a^2-45 b^2 ...

    Text Solution

    |

  18. Factorize: (i)x^4-y^4 (ii) 16 x^4-81 (iii)x^4-(y+z)^4 (iv) 2x-32...

    Text Solution

    |

  19. Factorize: (i)16 a^2-(25)/(4a^2) (ii) 16 a^2b-b/(16 a^2) (iii)100...

    Text Solution

    |

  20. Factorize each of the following algebraic expressions: (i)x^4-81 y^4 ...

    Text Solution

    |