Question

determine as Raizes da equacao -x²-4x+60=0

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Answer 1

Explicação passo-a-passo:

-x² -4x +60=0 (×-1)

x² +4x -60=0

∆= 4² -4.1.(-60)

∆= 16 +240

∆= 256

x= - 4 ±√256/2.1

x= -4 ± 16/2

x1= -4+16/2

x1= 12/2

x1= 6

x2= -4-16/2

x2= -20/2

x2= -10

S= { -10 , 6}