Respostas
a)f(3)=2.3²-6.3-4
2.9-18-4
18-18-4
0-4
-4
f(-2)=2.(-2)²-6.(-2)-4
2.4+12-4
8+12-4
20-4
16
f(0)=2.0²-6.0-4
2.0-0-4
0-0-4
-4
d)f(-0,2)=2.(-0,2)²-6.(-0,2)-4
2.0,04+1,2-4
0,08+1,2-4
1,28-4
-2,72
e)g(1)=-3.1²-6.1+2
3.1-6+2
3-6+2
-3+2
-1
f)g(-4)=-3.(-4)²-6.(-4)+2
-3.16+24+2
-48+24+2
-24+2
-22
g)g(0)= -3.0²-6.0+2
0-0+2
2
h)g(1/2)=-3.1/2-6.1/2+2
-3/2-3+2
mmc=2
-3/2-6/2+4/2=
-9/2+4/2
-5/2
i)f(3) fiz na letra a so copiar o resultado e g(1) letra e
-4+(-1)= -4-1=-5
j)-22+(-2,72)=-22-2,72=-24,72 ( so olhar os resultados acima)
l)2.2+3.(-4)
4-12
-8
lm)-4+4.(-4)
-4-16
-20