Question 47: Find x knowing \(\begin{aligned} &(x+3)^{2}-(x-2)(x+2)=0 \end{aligned}\)
\(\begin{aligned} &(x+3)^{2}-(x-2)(x+2)=0 \\ &\Leftrightarrow x^{2}+6 x+9-x^{2 }+4=0 \\ &\Leftrightarrow 6 x=-13 \\ &\Leftrightarrow x=\frac{-13}{6} \end{aligned}\)
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