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Solve the equation for all values of x by completing the square x^2+68= -18x

Solve the equation for all values of x by completing the square x^2+68= -18x
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4 votes
Solve the equation for all values of x by completing the square x^2+68= -18x

User Samir Adel
by
7.4k points

1 Answer

3 votes

Answer:


x=-9 \pm √(13)

Explanation:


x^2+18x=-68 \\ \\ x^2+18x+81=13 \\ \\ (x+9)^2=13 \\ \\ x+9=\pm √(13) \\ \\ x=-9 \pm √(13)

User Thomas Piard
by
8.0k points
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