3 years ago

Find the number of solutions of the equation. 0 = x2 + 2x + 9

Mathematics

1 answer:

Aloiza [94]3 years ago

4 0

$x^2+2x-9=0\\
\Delta=2^2-4\cdot1\cdot(-9)=4+36=40\ \textgreater \ 0\Rightarrow\text{two solutions exist}$

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