Question

y(x)=3x²+12x+8 Função do 2° Grau

Answer 1

y=3x^{2}+12x+8
\delta=b^{2}-4ac
\delta=12^{2}-4(3)(8)
\delta=144-96
\delta=48

x'=-b-\sqrt {48}\div2×(a)
x'=-12-4\sqrt {3}\div2×3
x'=-12-4\sqrt {3}\div 6
x'=-12-4×1,7\div 6
x'= -3,13

x"= -b+\sqrt {48}\div2×(a)
x"= -12+4×1,7\div 6
x"= -0,83