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WilburnBuonomo WilburnBuonomo
  • 12-06-2015
  • Mathematics
Answered

what are the solutions of the equations x^2+14x=-130? (1point) a.2,-16 b.10,-13 c.-2,16 d.no solution

Verified Answer :

konrad509
konrad509 konrad509
  • 12-06-2015

\(x^2+14x=-130\\ x^2+14x+49=-81\\ (x+7)^2=-81\)

no solutions in \(\mathbb{R}\)

in \(\mathbb{C}\)
\(x+7=-\sqrt{-81} \vee x+7=\sqrt{-81}\\ x=-7-\sqrt{-81} \vee x=-7+\sqrt{-81}\\ x=-7-9i \vee x=-7+9i\\\)

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