a
3 a
4 a
5 a
Factorisation of the polynomial 2a2 + 7ab - 15b2 is
(2a + 3b) (a + 5b)
(2a - 3b) (a + 5b)
(2a + 3b) (a - 5b)
(2a - 3b) (a - 5b)
The polynomial a2 - b + ab - a on factorisation reduces to
(a + b) (a2 + b2)
(a + b) (a + 1)
(a - b) (a + b)
(a + b) (a - 1)
A rectangular parking lot has an area of 5x2 + 17x + 6 square units. One of its sides is
5x + 6
x + 2
5x + 2
5x + 1
Which of the following is one side of a rectangle with area 40n2 + n - 6?
8n + 3
5n - 2
5n + 2
8n + 4
Factorisation of the polynomial (x - y)2 a2 + 2 (x - y) (x + y)ab + (x+ y)2 b2 gives
(ax - by) (ax + by)
(ax + by) (bx + ay)
(ax - ay + bx + by)2
(ax + ay + bx + by)2
One of the factors of (x - y)2 - 4 (x - y) - 45 is
x - y + 9
x - y - 5
x - y - 9
x + y + 5
Factorisation of x3y2 + x2y3 is
x2 (x + y)
x2y2 (x + y)
xy (x + y)
xy (x2 + y2)
xy (z2 + 1) + z (x2 + y2) can be factorised as
(xy + z) (yz + x)
(zx + y) (xy + z)
(yz + x) (zx + y)
(x2 + y2) (z + x)
The area of a square is 4x2 + 20x + 25 which expression represents a side of the square?
(2x - 5)
(5 - 2x)
(2x + 5)
2x2 + 5
