Respuesta :

gabs515

Explicación paso a paso:

[tex]81 {a}^{4} - 36 {b}^{6} = {9}^{2 } ({a}^{2} )^{2} - {6}^{2} ({b}^{3} ) ^{2} [/tex]

[tex] ({ {9} {a}^{2} })^{2} - ({ {6} {b}^{3} })^{2} [/tex]

[tex](9 {a}^{2} - 6 {b}^{3} )(9 {a}^{2} + 6 {b}^{3} )[/tex]

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