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2x²+6x+9-160=0
2x²+6x-151=0
↓ ↓ ↓
a b c
Como no se puede factorizar utilizamos formula :
x₁,₂=-b⁺/₋
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2a
x₁,₂= -(6) ⁺/₋
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2(2)
x₁,₂= -6 ⁺/₋ √1244
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4
x₁,₂= -6 ⁺/- 2√311
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4
x₁,₂= -3 ⁺/₋√311
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2
Rpta: x₁,₂= -3 ⁺/₋√311
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2
Suerte y saludos !!