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1
Express the folllowing as the product of two factors:
(3x-2)(3x-2)
(2x-3)(2x-3)
(4x-3)(4x-3)
(3x-4)(3x-4)
2
if the roots of the quadratic equations are real and equal , then:
3
Factorise: 5 - 2x - 6xy + 15y
(1+2y)(4-3x)
(1+3y)(5-2x)
(1+2y)(4-2x)
(1-3y(2-2x)
4
What should be added to to make it a perfect square
7
-2
5
8
11
6
If the roots of the quadratic equation are real and distinct, then
In a bag, there are coins of 25 p, 10 p and 5 p in the ratio of 1 : 2 : 3. If there is Rs. 30 in all, how many 5 p coins are there?
50
100
150
200
The product of two numbers is 640. Their difference is 12. Find these numbers.
12, 30
20, 32
30, 20
16, 40
9
Find the value of the discriminant for the quadratic equation
-22
-23
-28
None of these
10
Find the nature of the roots of
:Roots are real and equal
Roots are imaginary or complex.
Roots are real and unequal
Find the common factor :
xy
8xy
8x
8y
12
A nu7mber consists of two digits whose sum is 9. If 27 is subtracted from the original number. its digits are interchanged. Then the original number is___________________.
53
45
92
63
13
One side of a rectangle is 3 ft shorter than twice the other side. Find the sides if the perimeter is 24 ft.
5ft, 7ft
8ft, 9ft
10ft, 12ft
4ft, 7ft
14
The sum of the ages of Vivek and his younger brother Amit is 47 years. The product of their ages in years is 550. Express this in quadratic form.
15
A two digit number such that the product of its digits is 21. When 36 is subtracted from the number the digits are interchanged. Find the digit at the tens place.
77
-7
NONE F THESE
16
Find the common factor:
4xy
7xy
6xy
17
Find the quadratic equation for :
18
Factorise: :
(a-b)[1-(a+b)]
(a+b)[1-(a-b)]
(a-b)[1-(a-b)]
none of these
19
The factors of are ______________
Factorization is not possible
20
On factorisation is not equal to ______________________