Question

de o grau seguinte do polinomio P (x)=5x2+x-4 a) gr (P)=1 b) gr ( P)=2 c) gr(P)=8 d) gr (P)=3

Answer 1

a) P(x)5x.2=x-4=1 

P(x)   6x.(-2)=1

P(x)   6x = 1+2

P(x)   x = 3/6

P(x)   x = 0,5

b)P(x)  5x.2+x-4=2

P(x)   6x.(-2)=2

P(x)   6x = 2+2

P(x)   x = 4/6

P(x)   x = 0,66

c)P(x)5x.2+x-4=8

P(x)   6x.(-2)=8

P(x)   6x = 8+2

P(x)   x = 10/6

P(x)   x = 1,66

d)P(x)5x.2+x-4=3

P(x)   6x.(-2)=3

P(x)   6x = 3+2

P(x)   x = 5/6

P(x)   x = 0,83