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olganol [36]
3 years ago
8

What is the solution to 3|x + 3| = 12?

Mathematics
1 answer:
Neporo4naja [7]3 years ago
7 0

Step-by-step explanation:

3(x+3)=12

3x+9=12

3x=12-9

3x=3

x=1

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3 years ago
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yarga [219]
   
\displaystyle \bf \\
x_1+x_2=6\\\\
x_1\cdot x_2=15\\\\
\Longrightarrow~~x^2-6x+15=0\\\\
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x_1=\boxed{3-i\sqrt{6}}\\\\
x_2=\boxed{3+i\sqrt{6}}\\\\
\texttt{Verify:}\\\\
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