Respuesta :
(x + 1)(x + 8)
x(x + 8) + 1(x + 8)
x*x + 8*x + 1*x + 1*8
x² + 8x + x + 8
x² + 9x + 8
Hope this explains it.
x(x + 8) + 1(x + 8)
x*x + 8*x + 1*x + 1*8
x² + 8x + x + 8
x² + 9x + 8
Hope this explains it.