Evaluate ( 47)2 using the expansion for (a – b) 2
2009
2209
2109
2309
Express 9 a2 + 4 2ab + 49b 2 as a perfect square
What must be added to 16 m2 – 24 mn to make it a perfect square ?
9n2
9n
3n2
3n
Evaluate ( 105)2 by using the expansion of (a + b ) 2
11000
11025
10025
11005
If x + (1/x) = 5, find the value of x2 + (1/x)2
99.80
99.81
99.84
90.84
Find the products : ( 2 + x ) ( 2 - x )
4 - x
2 -x2
4 - x2
2 - x
( x + 2 ) (x + 3 ) = _________.
x2 + 5x + 6
x2 + 6x + 5
x2 + 9x + 6
x2 + 6 + 2x
