(3a - 4b ) (3a - 4b ) =
3a2 - 4b2
9a2 - 16 b2
3a2 + 4b2
9a2 + 16 b2
( x +1 ) ( x - 1 ) = ______.
x2 + 2 x + 1
x2 - 1
x2 + 1
x2 + x + 1
( 2x - 3 ) ( 2x+ 3 ) ( 4x2 + 9 ) =
16x4 - 81
4x2 - 9
16 x4 - 9
4x2 - 81
(3mn -2 ) (4mn + 1 ) =
12 m2n2 - 5mn - 2
12 m2n2 + 7mn - 2
12 m2n2 - 7mn - 2
12 m2n2 + 5mn - 2
10. 3 x 9.7 =
99.81
99.71
99.91
99.61
(y + 3) ( y - 5 ) =___________.
y2 - 2y -15
y2 + 2y +15
y2 - 2y + 15
y2 + 2y -15
(x + 2 ) ( x + 3 ) =
x2 + 5x -6
x2 + 6x - 5
x2 + 5x + 6
x2 - 6x + 5
The value of 502 x 498 is
249996
249916
249936
249956
( a + 1/3 ) ( a + 1/4 ) = _________.
a2 + 2a/ 12 + 1/12
a2 + 7a/ 12 + 1/12
a2 - 2a/ 12 + 1/12
a2 - 7a/ 12 + 1/12
(5x + 2y ) (2x - 5y ) = __________.
10X2 - 21 XY + 10 Y2
10X2 - 21 XY - 10 Y2
10X2 + 21 XY + 10 Y2
None of these
