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

asked Jul 7, 2024 190k views

4 votes

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3 votes

Answer:

$x=-9 \pm √(13)$

Explanation:

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

Thomas Piard answered Jul 13, 2024

7.3k points

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