Math, asked by Sikanjaysingh44, 8 months ago

1.  Which one is not a polynomial
 (a)   4x2 + 2x – 1
(b)   
(c)   x3 – 1
(d)   y2 + 5y + 1
2.  The polynomial px2 + qx + rx4 + 5 is of type
(a)   linear
(b)   quadratic
(c)   cubic
(d)   Biquadratic
3.  Identify the polynomial
 (a)   x–2 + x–1 + 5
(b)   
(c)   
(d)   3x2 + 7
4.  The zero of the polynomial p(x) = 2x + 5 is
 (a)   2
(b)   5
(c)   
(d)   
5.  The number of zeros of x2 + 4x + 2
 (a)   1
(b)   2
(c)   3
(d)   none of these
6.  The polynomial of type ax2 + bx + c, a = 0 is of type
 (a)   linear
(b)   quadratic
(c)   cubic
(d)   Biquadratic
7.  The value of k, if (x – 1) is a factor of 4x3 + 3x2 – 4x + k, is
      (a)   1
(b)   2
(c)   –3
(d)   3


8.  The degree of polynomial x + x^2 +1 is
 (a)   0
(b)   2
(c)   1
(d)   3
9.  If 3 + 5 – 8 = 0, then the value of (3)3 + (5)3 – (8)3 is
 (a)   260
(b)   –360
(c)   –160
(d)   160
10.  If value of 104 × 96 is
 (a)   9984
(b)   9469
(c)   10234
(d)   11324
11.  The value of 5.63 × 5.63 + 11.26 × 2.37 + 2.37 × 2.37 is
 (a)   237
(b)   126
(c)   56
(d)   64
12.  The value of 
 (a)   300
(b)   500
(c)   400
(d)   600
13.  If x + y = 3, x2 + y2 = 5 then xy is
 (a)   1
(b)   3
(c)   2
(d)   5
14.  If x + 2 is a factor of x3 – 2ax2 + 16, then value of a is
  (a)   3
(b)   1
(c)   4
(d)   2


15.  If one of the factor of x2 + x – 20 is (x + 5). Find the other
  (a)   x – 4
(b)   x + 2
(c)   x + 4
(d)   x – 5
























Answers

Answered by AditiHegde
26

1.  Which one is not a polynomial

Option (b) is correct.

2.  The polynomial px2 + qx + rx4 + 5 is of type

Option (d) Biquadratic is correct.

3.  Identify the polynomial

Option (d) 3x2 + 7 is correct.

4.  The zero of the polynomial p(x) = 2x + 5 is

2x+5 = 0 x = -5/2

5.  The number of zeros of x2 + 4x + 2

Option (b)   2 is correct.

6.  The polynomial of type ax2 + bx + c, a = 0 is of type

Option (b)   quadratic is correct.

7.  The value of k, if (x – 1) is a factor of 4x3 + 3x2 – 4x + k, is

x-1 is a factor, then substitute x=1 in the equation 4x3 + 3x2 – 4x + k

4(1)^3 + 3(1)^2 – 4(1) + k = 0

4 + 3 - 4 + k = 0

k = -3

Option (c)   –3 is correct

8.  The degree of polynomial x + x^2 +1 is

Option (b)   2 is correct  

9.  If 3 + 5 – 8 = 0, then the value of (3)3 + (5)3 – (8)3 is

3^3 + 5^3 - 8^3

= 27 + 125 - 512 = -360

Option (b)   –360 is correct

10.  If value of 104 × 96 is

104 × 96 = (100+4) × (100-4) = 100^2 - 4^2 = 10000 - 16 = 9984

Option (a)   9984 is correct.

11.  The value of 5.63 × 5.63 + 11.26 × 2.37 + 2.37 × 2.37 is

5.63 × 5.63 + 11.26 × 2.37 + 2.37 × 2.37

= 5.63 × 5.63 + 5.63 × 2 × 2.37 + 2.37 × 2.37

= a × a + 2ab + b × b

= (a + b)^2

= (5.63 + 2.37)^2

= 8^2 = 64

Option (d)   64 is correct.

12.  The value of  

(a)   300

(b)   500

(c)   400

(d)   600

13.  If x + y = 3, x2 + y2 = 5 then xy is

(x + y)^2 = x^2 + y^2 + 2xy  

3^2 = 5 + 2xy

9 = 5 + 2xy

4 = 2xy

xy = 2

Option (c)   2 is correct

14.  If x + 2 is a factor of x3 – 2ax2 + 16, then value of a is

x+2 is a factor, then substitute x=-2 in the equation x3 – 2ax2 + 16

(-2)^3 - 2a(-2)^2 + 16 = 0

-8 - 8a + 16 = 0

8 - 8a = 0

8 = 8a

a = 1

Option (b)   1 is correct.

15.  If one of the factor of x2 + x – 20 is (x + 5). Find the other

x + 5 is a factor of  x2 + x – 20 , divide  x2 + x – 20  by x + 5

x+5) x^2+x-20 (x+4

       x^2+5x

---------------

       0  - 4x-20

              4x+20

-----------------------

                 0

Option (c)   x + 4 is correct

Answered by mehak238517
3

Which one is not a polynomial

      (a)   4x2 + 2x – 1

(b)   

(c)   x3 – 1

(d)   y2 + 5y + 1

2.  The polynomial px2 + qx + rx4 + 5 is of tyep

      (a)   linear

(b)   quadratic

(c)   cubic

(d)   Biquadratic

3.  Identify the polynomial

      (a)   x–2 + x–1 + 5

(b)   

(c)   

(d)   3x2 + 7

4.  The zero of the polynomial p(x) = 2x + 5 is

      (a)   2

(b)   5

(c)   

(d)   

5.  The number of zeros of x2 + 4x + 2

      (a)   1

(b)   2

(c)   3

(d)   none of these

6.  The polynomial of type ax2 + bx + c, a = 0 is of type

      (a)   linear

(b)   quadratic

(c)   cubic

(d)   Biquadratic

7.  The value of k, if (x – 1) is a factor of 4x3 + 3x2 – 4x + k, is

      (a)   1

(b)   2

(c)   –3

(d)   3

8.  The degree of polynomial  is

      (a)   0

(b)   2

(c)   1

(d)   3

9.  If 3 + 5 – 8 = 0, then the value of (3)3 + (5)3 – (8)3 is

      (a)   260

(b)   –360

(c)   –160

(d)   160

10.  If value of 104 × 96 is

      (a)   9984

(b)   9469

(c)   10234

(d)   11324

11.  The value of 5.63 × 5.63 + 11.26 × 2.37 + 2.37 × 2.37 is

      (a)   237

(b)   126

(c)   56

(d)   64

12.  The value of 

      (a)   300

(b)   500

(c)   400

(d)   600

13.  If x + y = 3, x2 + y2 = 5 then xy is

      (a)   1

(b)   3

(c)   2

(d)   5

14.  If x + 2 is a factor of x3 – 2ax2 + 16, then value of a is

      (a)   3

(b)   1

(c)   4

(d)   2

15.  If one of the factor of x2 + x – 20 is (x + 5). Find the other

      (a)   x – 4

(b)   x + 2

(c)   x + 4

(d)   x – 5

1. (b)2. (d)3. (d)4. (d)5. (b)6. (a)7. (c)8. (c)9. (b)10. (a)11. (d)12. (b)13. (c)14. (b)15. (a)

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