Question

responde pfv urgente

Answer 1

Resposta:

a) 2x² + 8x + 5

b) 13x² + 10x + 2

Explicação passo a passo:

a) (x + 1)² + (x + 2)² =

= (x² + 2 . x . 1 + 1²) + (x² + 2 . x . 2 + 2²)

= (x² + 2x + 1) + (x² + 4x +4)

= 2x² + 6x + 5

b) (2x + 1)² + (3x + 1)² =

= ((2x)² + 2 . 2x . 1 + 1²) + ((3x)² + 2 . 3x . 1 + 1²)

= (4x² + 4x + 1) + (9x² + 6x + 1)

= 13x² + 10x + 2