The document solves a quadratic equation with the formula x^2 + 5x + 4 and finds the two roots to be -1 and -4. It then graphs the quadratic function f(x)=x^2 - 4x + 3 by calculating the output for inputs from -5 to 9 and plotting the points.

1. ELEMENTOS x2+x+9 Equação
a= 1
b= 5
c= 4 A Fórmula de Bhaskara
delta= b^2-4.a.c -9
raiz delta 3
1ª RAIZ x' -1
2ª RAIZ x" -4
x x² 4x c f(x)=x²-4x+3
9,00 81,0 -36,0 3,0 48,00
8,00 64,0 -32,0 3,0 35,00 GRÁFICO DA FUNÇÃO QUADRÁTICA f(x)=x²-4x+3
7,00 49,0 -28,0 3,0 24,00
6,00 36,0 -24,0 3,0 15,00
60,00
5,00 25,0 -20,0 3,0 8,00
4,00 16,0 -16,0 3,0 3,00 50,00
3,00 9,0 -12,0 3,0 0,00
2,00 4,0 -8,0 3,0 -1,00 40,00
1,00 1,0 -4,0 3,0 0,00
0,00 0,0 0,0 3,0 3,00 30,00
-1,00 1,0 4,0 3,0 8,00 Série1
-2,00 4,0 8,0 3,0 15,00 20,00
-3,00 9,0 12,0 3,0 24,00
10,00
-4,00 16,0 16,0 3,0 35,00
-5,00 25,0 20,0 3,0 48,00
0,00
-5,0 -3,0 -1,0 1,0 3,0 5,0 7,0 9,0
-10,00