Five years ago, a woman’s age was the square of her son’s age. Ten years hence her age will be twice that of her son’s age. Then the age of the son five years ago
5
6
7
10
What is the discriminant of the quadratic equation ( 3x - 2) 2 = 0 ?
0
9
288
-288
Solution of x2 - 2x - 15 = 0 is
x = -5 and x = 3
x = 5 and x = -3
x = -5 and x = -3
x = -2/5 or x = -3/2
x = 2/5 or x = -3/2
x = -2/5 or x = 3/2
x = 2/5 or x = 3/2
The root of 2x2 - 7x + 6 = 3 are
x = 1/2, 3
x = -1/2, 3
x = 1/2, -3
A two digit number if such that the product of its digits 12. When 36 is added to this number the digits interchange their places. Then the numbers are :
26
62
34
43
Solution of x2 - 4x - 5 = 0 is
x = -5 or x =1
x = 5 or x = 1
x = 5 or x = -1
x = -5 or x = -1
The length of Verandah is 3m more than its breadth. The numerical value of its area is equal to the numerical value of its perimeter. Then the dimensions of the verandah are :
Breadth = 3m, length = 6m
Breadth = 4m, length = 7m
Breadth = 5m, length = 8m
None of these
x2 - 3x + 6 = 0, the solution is
2x2-8 = 0, the solution is
x = + 2
x = -2
x = 2
