193k views
4 votes
En la ecuación x2 + 2x −p = 0 una de las soluciones es -5, ¿cuál es el valor de p?

User Linnea
by
5.4k points

1 Answer

4 votes

Answer:

p = 15

Explanation:

Si

x₁ = -5

entonces:

x² + 2x - p = 0

-5² + 2*-5 - p = 0

25 - 10 - p = 0

15 - p = 0

15 = p

User Hermit
by
6.8k points
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