Question

me ajudem, por favor preciso disso urgente

Answer 1

1°

At = (3x +2) (2x + 1 + x + x + 2x + 1) + 2 (2x +1) (x)

= (3x + 2) (6x +2) + (4x² + 2x)

= (18x² + 6x + 12x + 4 + 4x² + 2x)

= (18x² + 4x² + 6x + 12x +2x + 4)

→ At = ( 22x² + 20x + 4)


2°

V = (3x + 2) (2x + 1) (x)

= (3x + 2) (2x² + x)

= (6x³ + 3x² + 4x² +2x)

→ V = (6x³ + 7x² + 2x)