(x do kwadratu - 4x-6)+(2x do kwadratu+5x+7)+(-x do kwadratu - 2x + 3) = (3x-6)-(-2x+4) 21x do kwadratu - (35x + 12x do kwadratu)-(14-32x do kawdratu 6m-(2m+1)-(m-4) -(x-3y+4z)-(5x-6y-7z) (-x do kwadratu - 5x + 1 ) - (3x do kwadratu + 2y - 4

(x do kwadratu - 4x-6)+(2x do kwadratu+5x+7)+(-x do kwadratu - 2x + 3) = (3x-6)-(-2x+4) 21x do kwadratu - (35x + 12x do kwadratu)-(14-32x do kawdratu 6m-(2m+1)-(m-4) -(x-3y+4z)-(5x-6y-7z) (-x do kwadratu - 5x + 1 ) - (3x do kwadratu + 2y - 4