Factorise 3m3 - 6m2 :
3m (m -2 )
3m2 (m-2)
3m2 ( m + 2 )
3m (m2 - 2)
The solution of the equation 3 (x - 5) = 5x- 27 is
x = 6
x = 5
x = 4
x = 3
Factorise 9a2 - 6ax :
3a ( a - x )
3a (a - 2x )
3a (3a - 2x)
3ax (3a - 2)
If a number plus two third of it self plus one half of itself plus one seventh equals 97, then the number is
40
48
42
46
If x = 7, find the value of the expression x3 + 7x2 + 4x + 2
748
685
716
694
If the factors of a2 + b2 + 2(ab + bc + ca) are (a + b + 3) and (a + b + nc), then the value of m + n is
0
2
4
6
The value of x2 + 1/x2 when x - 1/x = 7 is
51
50
53
55
Factorize 21a2bc + 28ab2c + 35abc2
7a2bc(3a + 4b + 5c)
3ab2c(3a + 46 + 5c)
7abc(3a + 4b + 5c)
7ab2c(3a + 4 + 5c)
If (x + 1) is a factor of x2 - 3ax + 3a - 7, then the value of a is
1
-1
-2
Factorise 4x2 + 9y2 – 4z2 – 12 xy
( 2x – 3y + 2z) (2x -3y – 2z)
(2x + 3y – 2z) ( 2x + 3y + 22)
(2x – 3y – 2z) ( 2x – 3y + 2z)
(2x + 3y + 2z) ( 2x – 3y -2z)
