Question

2x²+2x-24=0 com o cálculo

Answer 1

b²-4.a.c
b=2
a=2
c=-24
2²-4.2.(-24)=
4+192=
196

x¹=-b+√Δ/2.a
x¹=-2+14/4
x¹=12/4
x¹=3

x2=-b-√Δ/2.a
x2=-2-14/4
x2=-16/4
x2=-4

S={ 3 e -4}