Resposta :
Formula de Bhaskara
Δ= 8²- 4·2·(-10)
Δ=144
x1= -8-√144 ÷ 2·2
x1= 20÷4
x1= 5
x2= -8 +√144 ÷ 2·2
x2= 4÷4
x2=1
Δ= 8²- 4·2·(-10)
Δ=144
x1= -8-√144 ÷ 2·2
x1= 20÷4
x1= 5
x2= -8 +√144 ÷ 2·2
x2= 4÷4
x2=1