Respuesta :

Answer:

Area = 3x^5+3x^4-3x^3-3x^2

Step-by-step explanation:

Area equals length times width

x(x+1) * 3x(x^2-1)

(x^2+x) * (3x^3-3x)

3x^2(x+1)(x^2-1)

3x^5+3x^4-3x^3-3x^2

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