(X+1)(x+2) (X-1)(x-4) (2x-3)(5x-1) (4x-3)(3x+1) Помогхите:с

Question

(X+1)(x+2)
(X-1)(x-4)
(2x-3)(5x-1)
(4x-3)(3x+1)
Помогхите:с

Answer 1

1) x^2+2x+x+2= x^2+3x+2
2) x^2-4x-x+4= x^2-5x+4
3) 10x^2-2x-15x+3=10x^2-17x+3
4) 12x^2+4x-9x-3= 12x^2-5x-3