Question

2x²+10x+12=0 qual é o delta?

Answer 1

a) 2 b)10 c)12

∆= b²-4.a.c

∆=10²-4.2.12

∆=100-96

∆= 4

X= -b±√∆

2.a

X= -10±√4

2.2

X=-10±2

4

X1= -10+2 = -8

4. 4

X2= -10-2=-12

4. 4