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LukeNuno
LukeNuno LukeNuno
  • 03-12-2014
  • Mathematics
Answered

Solve for x:


x2 + 8x = -1

Verified Answer :

konrad509
konrad509 konrad509
  • 03-12-2014

\(x^2+8x=-1\\ x^2+8x+16-16=-1\\ (x+4)^2=15\\ x+4=\sqrt{15} \vee x+4=-\sqrt{15}\\ x=-4+\sqrt{15} \vee x=-4-\sqrt{15}\)

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