Выполните действия (x-5)(x-+1)(x-4)

(x-5)(x-2)-(x+1)(x-4)=x^2-7x+10-x^2+3x+4=-4x+14

(x - 5)(x - 2) - (x + 1)(x - 4) = x² - 2x - 5x + 10 - (x² - 4x + x - 4) = x² - 2x - 5x + 10 - x² + 4x - x + 4 =  -4x + 14 = -2( 2x - 7)