Seudónimo Seudónimo

24-10-2019
Mathematics

contestada

What are the solutions to the equation

x^2+14x=-130

please do a step by step

Respuesta :

joseaaronlara joseaaronlara

24-10-2019

Answer:

The answer to your question is: x1 = - 7 + 9i x2 = -7 - 9i

Step-by-step explanation:

x² + 14x = - 130

x² + 14x + (7)² = -130 + (7)²

(x + 7)² = -81

x + 7 = ± √-81

i² = -1, then x + 7 = ±√ 81i²

x + 7 = ± 9i

x1 = -7 + 9i x2 = -7 - 9i

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