Question

4+x(x-4)=0
Me ajudem, por favor

Answer 1

$4 + x(x - 4) = 0 \\ 4 + {x}^{2} - 4x = 0 \\ {x}^{2} - 4x + 4 = 0 \\ \\ delta = 16 - 16 = 0 \\ \\ x = \frac{4}{2} = 2$

S = {2}