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Expert: - 11/13/2008


Question
Execute each of the indicated multiplications: (1). x(a+b) (2). 3x^2(7x + 8y) (3). (3x +2)(8x +5) (4).(4x - 6)(2x + 1)  (5).(5x^2 + 7x + 3)(8x + 2) (6).(x + 1)(x -1) (7). (x -2)(x^2 + 2x + 4)

Answer
(1). x(a+b)= xa+xb

(2). 3x^2(7x + 8y)= 21x^3 + 24x^2y

(3). (3x +2)(8x +5) = 24x^2 + 31x +10

(4).(4x - 6)(2x + 1) = 8x^2 -8x -6

(5).(5x^2 + 7x + 3)(8x + 2)  45x^3 + 66x^2 + 38x + 6

(6).(x + 1)(x -1) = x^2 -1

(7). (x -2)(x^2 + 2x + 4) = x^3 -8

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