6 57 5 2 7 _2_ a2b + ___ a b __ a2b 58 1 ax3 3ax3 + ___ax3 10 3 _2_ 2 [ 3 a b] 4 12 19 ___ [ 10 ax ] 3 ESERCIZI Monomi e polinomi 59 ab ab 7 ____ ____ + ___ a2b2 60 4x + (2x 3x) 5x 2 2 2 2 3 5 _5_ 2 2 [6a b ] 10 [ 2x] Semplifica le seguenti espressioni addizionando i monomi tra loro simili (trasforma i numeri decimali in frazioni). 61 a + x + 3x 62 2a + 3ab 2a2b + 5a ab + 2a2b 2ab [a + 4x] 68 2x x 4y + 2y [ 3x 2y] 69 63 2x2 + x + 10x [2x2 + 11x] 64 ab2 ab2 + a2b 2a2b 65 10xy + 6x 3y xy + 9x + 5y [ 11xy + 15x + 2y] 72 (2b + 3a) + 6b a 4b 66 3a2 15a2 + 2a2 2b2 2b2 [ 10a2 4b2] 73 (6x3y4 2) (6x3y4 2) 67 3x2 x + 2x2 2x 5x2 + 4x [x] 74 ( 3x 2xy) + 7x 2xy + x + y 75 1 ( 11x + 4y 8z) (__z 18z + 9y) 2 76 (3 a 2 b + 5 c) ( 3 a + 4 b + 2 c) [a 4 b + 10 c] 77 2 5 1 2 __x2y + __xy2 (__x2y (1 __xy2)) 3 4 3 5 17 2 2 ___ [ x y + 20 xy + 1] 78 ax _2_ax + 4by _1_by 1 + ___ 79 4 2a ( b (5a + 2b c) + (2a + b 3c)) __c 3 80 31 ___ s 12t 81 2a b 3 4 _____ 3a a2b2 a + __a2b2 3a __a2b2 82 2 0,75 x2 + __y 4x2 (x2 + 0,5y) 3 83 1 0,¯ 3ab2 + 0,6a2b __ab2 + 0,2ba2 4 84 (0,6xy 0,5x + y) (0,5xy + 2,5x y) 85 7 2 2 3 1 4 21 ___ x y __xy2 + 2 __xy2 + __x2y ( 4) ___x2y + ___xy2 _1_ _1_ _8_ _2_ (2 7 2 _4_ ( [ a2b] _1_ 1 1 1 xy2 __xy2 + __x2y __x2y 2 3 4 1 1 1 1 70 __a __ab + __a + __ab 2 3 5 3 1 2 4 71 3x4 __x3 + __x4 + __x3 3 5 3 1 2 _1_ 2 ___ [ 2 xy + 12 x y] 7 ___ [ 10 a] 17 4 3 ___ [x + 5 x ] [ 4a] [0] [11x + y] 19 ___ [ 11x 5y + 2 z] _1_ _3_ _4_ _7_ + ax + 1 by 2 7 )) 7 _2_ [5a + 2b + 3 c] _5_ 19 ___ ((3 t + 2 s) 7t + s) ( 11 4 ( [12s 3 t] ( 3 ( 5 5 11 ___ [ax + 2] 2 2 5 [7a] 3 _4_ 2 2 [ 3 a b 5a] ))) 17 2 _1_ ___ [ 4 x + 6 y] 1 2 _4_ 2 ___ [ 12 ab + 5 a b] 1 ___ [ 10 xy 3x + 2y] ) (55 12 ) [ x2y xy2 2] 335