Respuesta :

Answer: x=45x^2+124x−64        

Step-by-step explanation: (9x−4)(5x+16)

(9x+−4)(5x+16)

(9x)(5x)+(9x)(16)+(−4)(5x)+(−4)(16)

45x^2+144x−20x−64

x=45x^2+124x−64