Resposta :
delta= (-4)^2-4.1.3 = 16 - 12 = 4
x= (-4)^2-4.1.3= 16-12=4
x= 4 +/ - V4 => x= 4 +/-2 ==> x1= 4 +2 ==.x1= 3 ; x2 = 4-2 => x2 = 1
2.1 2 2 2
x= (-4)^2-4.1.3= 16-12=4
x= 4 +/ - V4 => x= 4 +/-2 ==> x1= 4 +2 ==.x1= 3 ; x2 = 4-2 => x2 = 1
2.1 2 2 2