Question

dados p(x) = -3x³ + x² + x - 2 e g(x) = x³ - x² + x - 1,  calcule p(-1) + g(1)

Answer 1

 p(x) = -3x³ + x² + x - 2 e g(x) = x³ - x² + x - 1,  calcule p(-1) + g(1)

-3.-1³ + (-1)² + (-1) -2 = 
3³ + 1 - 1 -2 = 
9 - 2 = 
7

1³ - 1² + 1 -1 = 
1 -1 + 1 -1 = 
0

7+0 = 7

Answer 2

p(x) = -3x³ + x² + x - 2 e g(x) = x³ - x² + x - 1,  


p(-1) = -3x³ + x² + x - 2 ==> -3(-1)^3+(-1)^2 +(-1) -2==> 3+1-1-2==> 1

g(1) = x³ - x² + x - 1 ==> (1)^3-(1)^2 +(1) -1==> 1-1+1-1==> 0

p(-1) + g(1) = 1 + 0 ==> 0