Evaluate ( 9.6 x 10 .4 ) by using the identify ( a + b ) ( a- b ) = a2 – b2
99.80
99.81
99.84
90.84
Express 9 a2 + 4 2ab + 49b 2 as a perfect square
Evaluate ( 47)2 using the expansion for (a – b) 2
2009
2209
2109
2309
(a + b) ( a- b ) =
a2 + b2
a2 - b2
a2 b2
ab2
Evaluate 103 x 107
11210
11021
10121
11120
( x + 2 ) (x + 3 ) = _________.
x2 + 5x + 6
x2 + 6x + 5
x2 + 9x + 6
x2 + 6 + 2x
( a + b )2 = a2 + _________ + b2
a + b
2 ab
2 (a + b)
a b
Evaluate 872 by using the expansion for ( a - b)2.
7169
7369
7569
7568
An _____ is an equality which is true for all values of the variables.
Products
Expressions
identity
equation
113 x 107 = __________.
12190
12091
19121
19120
