Question

Quanto é?

x2-5x+8x=0

Answer 1

${x}^{2} - 5x + 8x = 0 \\ {x}^{2} - 3x = 0 \\ x(x - 3) = 0 \\ x = 0 \: ou \: x - 3 = 0 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: x = 3$


S = {0, 3}