(x-4)*(x-2)-(x-1)*(x-3)=

Question

(x-4)*(x-2)-(x-1)*(x-3)=

Answer 1

( X - 4 )*( X - 2 ) - ( X - 1 )*( X - 3 ) = X² - 2X - 4X + 8 - ( X² - 3X - X + 3 ) = X² - 6X + 8 - ( X² - 4X + 3 ) = X² - 6X + 8 - X² + 4X - 3 = - 2X + 5 

Comments

спасибо большое