Express 9 a2 + 4 2ab + 49b 2 as a perfect square
99.80
99.81
99.84
90.84
( x + 2 ) (x + 3 ) = _________.
x2 + 5x + 6
x2 + 6x + 5
x2 + 9x + 6
x2 + 6 + 2x
(2x + 3y)2 =
(x + 2 ) (x - 2 ) = _________.
x2 - 4
x2 + 4
x2 + 2x + 4
x2 - 2x + 4
113 x 107 = __________.
12190
12091
19121
19120
Evaluate 562 by using the expansion for (a + b ) 2
3030
3136
3026
3126
What must be added to 16 m2 – 24 mn to make it a perfect square ?
9n2
9n
3n2
3n
