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Formula: -b₊/₋√b²-4ac/2a
a. -1
b. 7
c.-10
-7₊/₋√7²-4(-1)(-10)/2(-1)
-7₊/₋√49-40/-2
-7₊/- √9/-2
-7 ₊/₋ 3/-2
Ahora
x₁=-7₊3/-2
x₁= -4/-2
x₁= 2
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x₂= -7-3/-2
x₂= -10/-2
x₂= 5
Rpta: x₁=2 y x₂= 5