Question

Resolva:
(x+y) . (x+y²) . (x²+y)

Answer 1

= (x + y) . (x + y²) . (x² + y)

= (x.x + x.y² + y.x + y.y²)  . (x² + y)

= (x² + xy² + xy + y³). (x² + y)

= x².x² + x².y + xy².x² + xy².y + xy.x² + xy.y + y³.x² + y³.y

= x⁴ + x²y + x³y²+ xy³ + x³y + xy² + x²y³ + y⁴

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