113 x 107 = __________.
12190
12091
19121
19120
An _____ is an equality which is true for all values of the variables.
Products
Expressions
identity
equation
( x + 1 ) (x + b ) = x2 + ______ x + b.
What must be added to 16 m2 – 24 mn to make it a perfect square ?
9n2
9n
3n2
3n
( x + 2 ) (x + 3 ) = _________.
x2 + 5x + 6
x2 + 6x + 5
x2 + 9x + 6
x2 + 6 + 2x
Evaluate 872 by using the expansion for ( a - b)2.
7169
7369
7569
7568
(2x + 3y)2 =
a + b
2 ab
2 (a + b)
a b
