4. (2x²³²-6x²³-12x²-4) + (11x³ + 8x + 2x² +6). 5³4²³- 2y +4² +24³ + 5) + (2y³²+ 34³+2+7) 6(5x²³-7x² + 3x + 4) = (8x² + 2x² + 3x-7) 7. 2x³y – 5xy + ³y²) + (7xy-6y² + 5x²y)ano Po sagot​