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anonymous
 5 years ago
What are the solutions of x2 + 2x + 9 = 0?
anonymous
 5 years ago
What are the solutions of x2 + 2x + 9 = 0?

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0There are no soluions

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0the solution is a complex no.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0When you try the quadratic formula, you will have a negative number under the square root part: \[\frac{b \pm \sqrt{b^24ac}}{2a}=\frac{2\pm\sqrt{436}}{2}=\frac{2\pm\sqrt{32}}{2}\] (This is equivalent to saying the discriminant is negative). As a result, there are no real solutions to this equation.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0bring the 1 to the other side, and use the same procedure as above: \[x^23x=1 \ \ \ \Longleftrightarrow \ \ \ x^23x1=0\]
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