Question

Determine o valor de delta: A)-X elevado a 2 +X+12=0

Answer 1

Delta= b²-4ac
Delta= 1²-4.(-1).12
Delta=49

Answer 2

-x² + x + 12 = 0

∆= b² - 4.a.c
∆= 1 - 4.(-1).12
∆= 1 + 48
∆= 49

x = -b ± √∆ /2.a
x = -(1) ± √49 /2.(-1)
x = -1 ± 7 /-2

x' = -1 -7 = -8/-2 = 4

x'' = -1 +7 = 6/-2 = -3