19) Dado o polinômio P (x)=2x⁴-4x³-6x²+8x-7, determine o valor de:

a) P-1)

b) P(1) + P(-2)

2) Dados os polinômios P(x)=2x⁴+8x³-x² +3x-9. e
h(x)=x⁴+3x³- 2x²-2x-4, calcule:

a) P(x)+h(x)
P(x)-h(x)

3) Efetue a multiplicação dos seguintes polinomios, p(x)=2x-3x-2 e h(x)=3x-4

3) Efetue a divisão de P(x) por h(x) quando:

a) p(x) = 2x²- 16x+36x²+10x-48 h(x)=x²-6x+5

b) p(x)=8x+4x-2x+2x-12 e h(x)=4x+5x+5x+6​
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