Question

Sua forma reduzida pls!​

Answer 1

Oiê, td bom?

$(x - 3) \times (x + 3) \times ( {x}^{2} + 9) \\ ( {x}^{2} - 9) \times ( {x}^{2} + 9) \\ ( {x}^{2} )^{2} - 81 = x^{4} - 81$