2 1. 6x² + 3x4 2.24abx +20 ab 3. 15x^²y - 6xy 4. 3bab bob 5. 18a³-24a² 6-12x²y + 12xy² + 12x4z = 7.3x² -6x²4 - 8.9x² + axy 9. 16mmx + 28mm 2 10, 15x + 20x 36ab +60b 6x with solution​