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Qudratic equations

Total questions: 11

Worksheet time: 16mins

Name
Class
Date
1.

 16x23=(2x+5)(5x3)16x^2–3=(2x+5)(5x–3)  State whether this is a quadratic equation or not

a)

Yes

b)

No 

c)

Ganeev

2.

Solve This

a)

x=5,6

b)

x=-2,-6

c)

x=2,-6

d)

x=-2,6

3.

Solve

a)

x=-12/5,-4

b)

x=12/5,4

c)

x=15/4,7

d)

x=19,2

4.

Solve

a)

x=12,33

b)

x=6,40/13

c)

x=-6,-40/13

d)

x=2,3

5.

Find the values of k for which the roots are real and equal in each of the following equation

4x2 + kx + 9 = 0

a)

12

b)

12 or -12

c)

10,10

d)

20,0

6.

x2 – 2(5 + 2k)x + 3(7 + 10k) = 0 find for real and equal roots

a)

k=3,1/2

b)

k=3,4

c)

k=2,1/2

d)

k=0,2

7.

Divide 29 into two parts so that the sum of the squares of the parts is 425.

a)

14,12

b)

-13,16

c)

13,16

d)

10,2

8.

The speed of a boat in still water is 8km/hr. It can go 15 km upstream and 22 km downstream in 5 hours. Find the speed of the stream.

a)

4km/hr

b)

5km/hr

c)

3km/hr

d)

10km/hr

9.

. A fast train takes one hour less than a slow train for a journey of 200 km. If the speed of the slow train is 10 km/hr less than that of the fast train, find the speed of the two trains.

a)

x=30

b)

x=50

c)

x=-40

d)

x=09

10.

The roots of the equation 7x² + x – 1 = 0 are

a)

real and distinct

b)

real and equal

c)

not real

d)

none of these

11.

Every quadratic polynomial can have at most

a)

three zeros

b)

one zero

c)

two zeros

d)

none of these