Question

5x2-x-3=0 do segundo grau

Answer 1

5x²-x-3=0
a=5
b=-1
c=-3

∆=b²-4.a.c
∆=-1²-5.(-3)
∆=1+15
∆=✓16=4

x=-b+-✓/2.a
x=1+-4/2.5
x=1+-4/10

x1=1+4/10
x1=5/10
x1=1/2

x2=1-4/10
x2=-3/10

disponha