Question

2x3+2x-24=0 me ajudem !

Answer 1

Resposta:

2x²+2x-24=0

a=2  b=2  c=-24

Δ= b²-4.a.c

Δ=2²-4.2.(-24)

Δ=4+192

Δ=196

x=-b+/-√Δ/2.a

x=-2+/-√196/2.2

x=-2+/-14/4

x'=-2+14/4

x'=+12/4

x'= 3

x"=-2-14/4

x"=-16/4

x=-4

S={-4,3}