Respostas

2014-03-27T11:44:12-03:00
(5X²-X-1)(2x²+x-5)

10x^4+5x³-25x² - 2x³-x²-5x-2x²-x+5
10x^4 +3x³ - 28x²-6x +5

a=10, b= 3, c= -28, d=-6 ,e=5

a+b+c+d+e 
10+3-28-6+5 = -16