Question

Se p(x)=8x³-2x²+4x-3,r(x)=-5x³+8x²-4 e s(x)=-7x³-5x²+9 Encontre:
a) p (x) +r(x)
b) r (x) +s(x)

Answer 1

Explicação passo-a-passo:

a)

p (x) +r(x)=8x³-2x²+4x-3+(-5x³+8x²-4)

p(x)+r(x)=8x³-5x³-2x²+8x²+4x-3-4

p(x)+r(x)=3x³+6x²+4x-7

b)

r (x) +s(x)=-5x³+8x²-4 +(-7x³-5x²+9)

r(x)+s(x)=-5x³-7x³-5x²+8x²-4+9

r(x)+s(x)=-12x³+3x²+5