... 404 895 4071721 69 t 0,5 f ( x) = (1 + x + 3x + x3 + x + 84 x )10 = a0 + a1 x + a2 x + + a50 x 50 10 Khi ú S = a1 + a2 + +a50 = f(1) f(0) = 99 - a M 99 10 = (99 5 ) = 95 099 00 499 2 = (95 099 105 + 499 )2 ... ) = 95 099 00 499 2 = (95 099 105 + 499 )2 0,5 = 95 099 2.1010 + 2 .95 099 . 499 .105 + 499 2 = 90 4382075008804 490 01 Vy S = 90 4382075008804 490 01 = 90 4382075008804 490 00 Thay ln lt cỏc giỏ tr x = 1,2 ; x =2,5 ... 2012 = 199 9 b, BCNN( a, b, c) Li gii túm tt: 1, a, p dng quy tc tỡm c c bn tỡm c CLN (a,b) = 199 9; = 600 299 70 CLN(a,b,c) = 199 9 b, BCNN (a,b) = 92 3538; BCNN(a,b,c) = 600 299 70 2, 2, 710 2 49( mod1000);7100...