а) -3vv−cv-cv−cc+4vc+4vc+4v = -3vv2−vc+4cv−4cv^2-vc+4cv-4cv2−vc+4cv−4c = -3vv2+3cv−4cv^2+3cv-4cv2+3cv−4c б) c2+3c2+3c2+3c5c−15c-15c−1 = c10c+15c2−5c−3c210c+15c^2-5c-3c^210c+15c2−5c−3c2 = c−3c2+15c2+5c−10c-3c^2+15c^2+5c-10c−3c2+15c2+5c−10c = c12c2−5c12c^2-5c12c2−5c в) a+3va+3va+3va−3v−1a-3v-1a−3v−1 = aa−3v−1a-3v-1a−3v−1+3va−3v−1a-3v-1a−3v−1 = a^2-3av-a+3av-9v^2-3v = a^2-4v^2-a-3vг) 7a−17a-17a−1a2−5a+1a^2-5a+1a2−5a+1 = 7aa2−5a+1a^2-5a+1a2−5a+1-1a2−5a+1a^2-5a+1a2−5a+1 = 7a^3-35a^2+7a-a^2+5a-1 = 7a^3-36a^2+12a-1
а) -3vv−cv-cv−cc+4vc+4vc+4v = -3vv2−vc+4cv−4cv^2-vc+4cv-4cv2−vc+4cv−4c = -3vv2+3cv−4cv^2+3cv-4cv2+3cv−4c б) c2+3c2+3c2+3c5c−15c-15c−1 = c10c+15c2−5c−3c210c+15c^2-5c-3c^210c+15c2−5c−3c2 = c−3c2+15c2+5c−10c-3c^2+15c^2+5c-10c−3c2+15c2+5c−10c = c12c2−5c12c^2-5c12c2−5c в) a+3va+3va+3va−3v−1a-3v-1a−3v−1 = aa−3v−1a-3v-1a−3v−1+3va−3v−1a-3v-1a−3v−1 = a^2-3av-a+3av-9v^2-3v = a^2-4v^2-a-3v
г) 7a−17a-17a−1a2−5a+1a^2-5a+1a2−5a+1 = 7aa2−5a+1a^2-5a+1a2−5a+1-1a2−5a+1a^2-5a+1a2−5a+1 = 7a^3-35a^2+7a-a^2+5a-1 = 7a^3-36a^2+12a-1