9th class Mathematics Online test Unit 4 Algebraic Expressions and Algebraic Formulas

Unit 4 – Algebraic Expressions and Algebraic Formulas

Quiz

 

1. Simplify: 2��+3��2x+3x:
   1.   5x 2
   2.   5x
   3.   6��6x
   4.   3x 2
2. If ��=2a=2 and ��=3b=3, find the value of ��2+��2a 2 +b 2 :
   1.   12
   2.   13
   3.   14
   4.   18
3. Expand: (2��+1)2(2x+1) 2 :
   1.   4x 2 +4x+1
   2.   x 2 −4x+1
   3.   4x 2 +1
   4.   4x 2 +2x+1
4. Factorize: ��2+5��+6x 2 +5x+6:
   1.   (x+2)(x+3)
   2.   (��−2)(x+3)
   3.   (x+2) 2
   4.   (x−2) 2
5. If ��+��=5a+b=5 and ����=6ab=6, find ��2+��2a 2 +b 2 :
   1.   19
   2.   25
   3.   31
   4.   13
6. The product of ��2x 2 and ��3x 3 is:
   1.   x 6
   2.   x 5
   3.   x 9
   4.   x 8
7. Which of the following is an example of a cubic expression?
   1.   x 3 +2x 2 +1
   2.   x 3 +x+1
   3.   Both a and b
   4.   None of these
8. Expand: (��−��)3(a−b) 3 :
   1.   a 3 −3a 2 b+3ab 2 −b 3
   2.   a 3 +3a 2 b−3ab 2 +b 3
   3.   a 3 −3a 2 b−3ab 2 −b 3
   4.   ��3+��3a 3 +b 3
9. Simplify: 3(��+2)+2(��−3)3(x+2)+2(x−3):
   1.   5x+12
   2.   5��−125x−12
   3.   5��+65x+6
   4.   5x−6
10. Expand: (��−3)2(x−3) 2 :
    1.   ��2−6��−9x 2 −6x−9
    2.   ��2+6��+9x 2 +6x+9
    3.   x 2 −6x+9
    4.   ��2+9x 2 +9