Question

Resolva na formula de bascara
-X²+X+12:0

Answer 1

Delta=49
X'= -3
X"= 4
..............

Answer 2

-x² = a
X = b
12= c

b²-4.a.c

∆ = (1)² - 4. -1. 12
∆= 1 + 48
∆= 49

-(b) ± √∆
/ 2.a

-(1)± √49 = -1 ± 7
/2.a /-2

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

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