Explicación paso a paso:
[tex]a = {l}^{2} \\ 9 {m}^{2} = ( {x - 2)}^{2} \\ \sqrt{9 {m}^{2} } = \sqrt{ {(x - 2)}^{2} } \\ 3m = x - 2 \\ x = 3 + 2 \\ x = 5[/tex]
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Explicación paso a paso:
[tex]a = {l}^{2} \\ 9 {m}^{2} = ( {x - 2)}^{2} \\ \sqrt{9 {m}^{2} } = \sqrt{ {(x - 2)}^{2} } \\ 3m = x - 2 \\ x = 3 + 2 \\ x = 5[/tex]