Question

Por favor urgente!!!
Dados na foto

Answer 1

∆= (-2)²-4.1.(-8)
∆=4+32
∆=36
X= -b+-√∆/2a
X= 2+-√36/2
X=2+-6/2
X'= 2+6= 8/2------> 4
X"= 2-6/2= -4/2 ------> -2