Question

URGENTE
resolva essa função y= (x +3)^2 - (x + 1)^2

Answer 1

Resposta:

y = (x + 3)² - (x + 1)²

y = (x² + 2 . x . 3 + 3²) - (x² + 2 . x . 1 + 1²)

y = x² + 6x + 9 - x² - 2x -1

y = 6x - 2x + 9 - 1

y = 4x + 8