(x + 3)^2 = x^2 + ____ + 9
(2x + 4y)^2 = 4x^2 + ____ + 16y^2
16xy
49
(a - 3)(a + 5)= a^2 + ____ -15
(x + 4)(x + 2) = x^2 + 6x +____
42
(b - 7)(b - 6)= b^2 - 13b +_____
2a
8
(y-7)^2 = y^2 - 14y + _____
6x
