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9TH MATHS (1-5 Chapter Revision)

Authored by SANJEEV KUMAR

Mathematics

9th Grade

CCSS covered

Used 228+ times

9TH MATHS (1-5 Chapter Revision)
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20 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Without actually calculating the cubes find the value of

 283+ (−15)3+ (−13)328^{3^{ }}+\ \left(-15\right)^3+\ \left(-13\right)^3  

16380

-16380

15380

-15380

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

   If  x−2x-2  is  a factor of  x3−2ax2+ax−1 x^{3^{ }}-2ax^2+ax-1\   then the value of  aa  is

 76\frac{7}{6}  

 −76-\frac{7}{6}  

 67\frac{6}{7}  

 −67-\frac{6}{7}  

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

   If   x+y+z=0x+y+z=0  then  x3+y3+z3x^3+y^3+z^3  is equal to

 3xyz3xyz  

 −3xyz-3xyz  

 xyxy  

 −2xy-2xy  

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

   The factors of   6x2+5x−66x^2+5x-6  are

 (2x−3)(3x−2)\left(2x-3\right)\left(3x-2\right)  

 (2x−3)(3x+2)\left(2x-3\right)\left(3x+2\right)  

 (2x+3)(3x−2)\left(2x+3\right)\left(3x-2\right)  

 (2x+3)(3x+2)\left(2x+3\right)\left(3x+2\right)  

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

   The factors of   x3−2x2−x+2x^3-2x^2-x+2  are

 (x−1)(x−1)(x−2)\left(x-1\right)\left(x-1\right)\left(x-2\right)  

 (x+1)(x+1)(x+2)\left(x+1\right)\left(x+1\right)\left(x+2\right)  

 (x+1)(x−1)(x+2)\left(x+1\right)\left(x-1\right)\left(x+2\right)  

 (x−1)(x+1)(x−2)\left(x-1\right)\left(x+1\right)\left(x-2\right)  

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

After rationalising the denominator of 
 733−22\frac{7}{3\sqrt{3}-2\sqrt{2}}  , we get the denominator as

13

19 

5

35

Tags

CCSS.HSN.RN.A.2

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

If the decimal representation of a number is non-terminating, non-repeating then the number is

a natural number

a whole number

a rational number

an irrational

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