Question

Se a=1 b=-3e c=- 4,calcule -b√b2-4ac/2a

Answer 1

--> X^2-3x-4

--> b^2-4ac

--> (-3)^2-4.1.(-4)

--> 9+16

--> Delta= 25

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--> 3 +/- 5(raíz de 25)/2a

--> x1 = 3+5/2 = 8/2 = 4

--> x2 = 3-5/2 = -2/2 = -1