(y + 3) ( y - 5 ) =___________.
y2 - 2y -15
y2 + 2y +15
y2 - 2y + 15
y2 + 2y -15
( 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
(3a - 4b ) (3a - 4b ) =
3a2 - 4b2
9a2 - 16 b2
3a2 + 4b2
9a2 + 16 b2
( a - 3 ) ( a + 7 ) = _______.
a2 + 10 a + 21
a2 + 10 a - 21
a2 + 4 a + 21
a2 + 4 a - 21
The value of 502 x 498 is
249996
249916
249936
249956
( 3x +2 ) ( 3x - 2 ) =
9x - 4
9x 2 - 4
3x2 - 4
(x + 2 ) ( x + 3 ) =
x2 + 5x -6
x2 + 6x - 5
x2 + 5x + 6
x2 - 6x + 5
10. 3 x 9.7 =
99.81
99.71
99.91
99.61
(x + 1 ) ( x -1 ) (x2 + 1 ) =
x3 -1
x4 - 1
x2 - 1
x2 + 1
( a - bc ) ( a + b c ) ( a2 + b2c2 ) =
a2 - b2 c2
a4 - b4 c4
a4 - b2 c2
a2 - b4 c4
