Respuesta :

Elizabethtienna

Answer: 4x^2+41x−84

Step-by-step explanation: (x+12)(4x−7)

(x+12)(4x+−7)

(x)(4x)+(x)(−7)+(12)(4x)+(12)(−7)

4x^2−7x+48x−84

4x^2+41x−84