1. 12x*yºz?w + 2xy? 11 2. (20"b? - 10ab'c) + 2ab* 11 3. (xy^2 - 4yºz +6xy2 - y" 2) + yz 11 4. 12y+z+ 6y Il 5. (bab*c-3a*bc+ 2abc-4ab'c) + abc = 6.(2r's" + 2"c* + rs*?") + sit Il 7 (2ax" + 4bx) + 2x 8. (Buv + 10uuw-uvw) + 2uv 9. (4xyz + 12xy! -- 6x + 12xyz) + 2xy = 10. (5a + 150 ) - 5ax
