dado os polinômios!?

sianedocinho

A(x)= x³ +2x²-3 e b (x) =x²+x+1,

calcule :

a) A (x) + B (x)

b) A (x) - b (x)

c) B(x)- A (x)

d) A (x) . B (x)

maria-descartes

Veja:

a) A (x) + B (x)=

x³ +2x²-3+x²+x+1=

x³+3x²+x-2

b) A (x) - b (x)=

x³ +2x²-3 -(x²+x+1)=

x³+2x²-3-x²-x-1=

x³+x²-x-4

c) B(x)- A (x)=

x²+x+1-(x³ +2x²-3)=

x²+x+1-x³-2x²+3=

-x³-x²+x+4

d) A (x) . B (x)=

(x³ +2x²-3).(x²+x+1)=

x^5+x^4+x³+2x^4+2x³+2x²-3x²-3x-3=

x^5+3x^4+3x³-x²-3x-3

caraduradepau

a)x³+3x²+x-2

b)x³+x²-x-4

anonymous

a) x³+3X²+x-3

b) x³+x²-x-4

c) -x³-x²+x+2

d) X5+3x4+2x³-x²-3x-3