Question

X elevado a 2 menos 3X menos 4 igual a zero

Answer 1

x2-3x-4=0
2x-3x=0+4
x=4

Answer 2

${x }^{2} - 3x - 4 = 0 \\ \gamma = - 3 { }^{2} - 4 \times 1 \times - 4= \\ \gamma = 9 - 16 \\ \gamma = 25$