Question

x²+x-7=-5 é preciso resolver pela formula de Bhaskaras

Answer 1

x²+x-7+5=0
x²+x-2=0
a=1
b=1
c=-2

∆= (1)²-4.1.(-2)
∆= 1+8
∆=9

x= -1+-√9/2.1

x= -1+-3/2

x1= -1+3/2= 2/2=1

x2= -1-3/2=-4/2=-2