Question

b) (x – 4)2 =
c) (x-3)(x+3)




me ajudemmmmm pfvr, com cálculo ​

Answer 1

b)

$(x - 4)2 \\ 2x - 2 \times 4 \\ 2x - 8 \\ x = \frac{ - 8}{2} \\ x = - 4$