Find the value of 2ab (a + b) - 3ab (a - b) when a = 1, b = 2
18
16
14
12
-9a - (-2a) =
7a
11a
-7a
-11a
If a + b + c = 9 and ab + bc + ca = 26, then the value of a3 + b3 +c3 - 3abc is
27
29
495
729
5x2 yz3 + 4xy2 z4 + 7xy - 4yz. In this expression what is the coefficient of yz
4
5
-4
7
(4/3 m + 3/4 x) (4/3 m - 3/4 x) =
16/9 k2 - 9/6m2
9/16 m2 - 16/9 x2
16/9m2 - 9/16 x2
None of these
Multiply (x - 4) and (2x + 7)
2x2 + x + 28
x2 - x - 28
2x2 - x - 28
x2 + x + 28
How may terms are there in the expression (2/3x - y)2 ?
1
2
3
-11x + (-6x) - (-9x) + (-3x) =
-11x
11x
12x
-12x
x2 + (a + b)x + ab =
(a - b)2
(x + a)(x - b)
(a + b)2
(x + a)(x + b)
What is the value of (704)2 - (297)2
4,07,607
4009
47,407
4,07,407
