Question

resolva: x² - 2x = x + 4

Answer 1

A resposta é x=4 pq:

x2-2x=x+4

x2-2x-x=4

x2-x=4

x=4

Answer 2

X^2 - 2x = x + 4
X^2 - 2x - x =4
X^2 - X = 4
X=2