Respuesta:
x = 12m
Explicación paso a paso:
[tex]a = x(3x) \\ a = {3x}^{2} \\ 432 {m}^{2} = {3x}^{2} \\ \frac{432}{3} {m}^{2} = {x}^{2} \\ 144 {m}^{2} = {x}^{2} \\ \sqrt{144 {m}^{2} } = x \\ 12m = x[/tex]
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Respuesta:
x = 12m
Explicación paso a paso:
[tex]a = x(3x) \\ a = {3x}^{2} \\ 432 {m}^{2} = {3x}^{2} \\ \frac{432}{3} {m}^{2} = {x}^{2} \\ 144 {m}^{2} = {x}^{2} \\ \sqrt{144 {m}^{2} } = x \\ 12m = x[/tex]