Resuelve:
(7 xg+8x²y-2) + (5x+2) + (8xy-3x+5x²y) =

(x-2+xy) + (3xy - 4x) + (8xy-2) =
22 22 (5x4z +8x²y-44) + (124+8x²-3) + (2xy ²2 -5x²) =

(3xye-542) + ( 3x³y2-8x) + (4-3x ) + ( 12y³ − 8x+ 4) =​