Question

try 2: rewrite $y = (x + 3)(x - 5)$ in standard form

Explanation:

Step1: Aplicar la propiedad distributiva (FOIL)

$(x+3)(x-5) = x \cdot x + x \cdot (-5) + 3 \cdot x + 3 \cdot (-5)$

Step2: Calcular cada término

$= x^2 - 5x + 3x - 15$

Step3: Combinar términos semejantes

$= x^2 + (-5x + 3x) - 15 = x^2 - 2x - 15$

Answer:

$y = x^2 - 2x - 15$