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solong [7]
4 years ago
5

Find the number of solutions using the discriminant b² - 4ac 9x²+12x+4=0 a.0 b.1 c.2

Mathematics
1 answer:
kherson [118]4 years ago
4 0
\bf 9x^2+12x+4=0\\\ 
\begin{array}{lcclll}
9x^2&+12x&+4&=y\\
\uparrow &\uparrow &\uparrow \\
a&b&c
\end{array}\qquad 
\begin{cases}
discriminant\to b^2-4ac\\\\
\textit{if negative}\\
\textit{no solutions}\\
----------\\
\textit{if positive}\\
\textit{two real solutions}\\
----------\\
\textit{if 0}\\
\textit{one solution}
\end{cases}
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