Question

x² – 2x + 1 = x² – 3​

Answer 1

Answer:

${x}^{2} \: - 2x \: = {x}^{2} -4$

$2x = {x}^{2} - 4 - {x}^{2}$

$2x = - 4$

$x = \frac{ - 4}{2} = - 2$