ПОМОГИТЕ!!!!!!!!!!!!!!!!!! (3X+1)^2+(5-X)+2(4+X)(X-4)+1

(3х + 1)² + (5 - х) +2(4 + х) (х - 4) +1 = (3х +1)² + (5 - х) +2(4х - 16 + х² - 4х) = (3х + 1)² + (5 - х) + 2 (х² - 16) = (9х² + 6х + 1) + 5 - х + 2х² - 32 = 9х² + 6х + 1 +5 - х + 2х² - 32 =11х² + 5х - 26