Question

resolva as equações x²=4/5x+1/5

Answer 1

► x² - 4/5x - 1/5 = 0 
► 5x² - 4x - 1 = 0 

Answer 2

$x^2= \frac{4}{5} x+ \frac{1}{5} \\ \\\frac{5}{5} x^2= \frac{4}{5} x+ \frac{1}{5} \\ \\\frac{5x^2}{5} = \frac{4x}{5} + \frac{1}{5} \\ \\5x^2 = 4x + 1\\ \\5x^2 - 4x - 1=0$