Question

x2−3×+4x−12−14=x−2−×2+2x

Answer 1

X2+x-3x+4x-x-2x-12-14+2=0
2x "elevado"2- 2x-24=0
A) 2 B)-2 C)-24
Delta= (-2) "ao quadrado" -4.2.(-24)
Delta= 4+192
Delta= 196
X= +2 ±√196/ 6
X= 2±14/4
"x uma linha" 2+14/ 4 = 16/4= 4
"x duas linhas" 2-14/4= -12/4= -3
S{4,-3}