Question

6x+×(x-2) - (x -6/2 )2= polinomios

Answer 1

6x + x(x - 2) - (x - 6/2)² =
6x + x² - 2x - (x² - 12x/2 + 36/4) =
6x + x² - 2x - (x² - 6x + 9) = 
6x + x² - 2x - x² + 6x - 9 =
x² - x² + 6x - 2x + 6x - 9 =
10x - 9