The greatest common factor of 48 a2b2c2 and 84 a3 b3 c3 is
12 a2 b2 c2
4abc
4a2b2c2
4a2c2b
If (x + 1) is a factor of x2 - 3ax + 3a - 7, then the value of a is
1
-1
0
-2
The value of x2 + 1/x2 when x - 1/x = 7 is
51
50
53
55
Factorise 3m3 - 6m2 :
3m (m -2 )
3m2 (m-2)
3m2 ( m + 2 )
3m (m2 - 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)
Factorise 9a2 - 6ax :
3a ( a - x )
3a (a - 2x )
3a (3a - 2x)
3ax (3a - 2)
Simplify ( 4x2 – 9) ÷ ( 2x -3)
2x -3
2x + 3
x + 3
x - 3
Factorize 6x + 9
3(2x + 3)
2(6x + 3)
3(3x + 2)
None of these
The product of (2a - 5b)(a + 3b) is
2a2 - ab + 15b2
2a2 + ab + 15b2
2a2 + ab - 15b2
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
2
4
6
