Question

x-4x+4=0/ 3 ??????????

Answer 1

4 + x² - 4x = x
4 + x² -4x -x = 0
x² -5x +4 = 0

Delta = b² - 4.a.c
Delta = (-5)² - 4.1.4
Delta = 25 - 16
Delta = 9

X = -b +- raiz de 9 /2

x = -5 +- 3 /2

x¹ = -5 -3 /2 = -8/2 = -4

x² = -5+3 /2 = -2/2 = -1