ALGEBRA x2 + xy + xy y2 2xy = ____________________ = (x y)(x + y) x2 y2 = ____________ = (x + y)(x y) scomponendo il numeratore e semplificando otteniamo: (x + y)(x y) = ___________= 1 (x + y)(x y) 609 1 + __ 1 x 1 x 1 + _____ x 1 610 2 x __2 2 1 2a __ a 3 2 611 __ + __2 c c ___ ___ a b 612 __ + __ 1 x + __ + 2 x x x 2 x b a b a b b rs 2 2x y y 614 _______ xy + 4 [ 5a b 2b 4b a 8b 7v y bx 2 2ab 4a b 2 2a c 3a 2bc 1 620 ______ _________ + __ 4c 3 2 6ac 15a bc 2 ab 2 12xy 8x z 3 ab y b ____; ____ 24x y z 2 6xyz 2 xy [ 78 6a b x2y ] rs 3 2 36a3b2c3 ] 2 ab 3xz2 + 10xz + 10y + 2z3 ____________________ [ ] 30x2yz2 3 3 a b ______ a b 1+a b 625 _____ _______ 2 2 4 4 4a b 2 2 2 (4a + 3bc) 6a + 2a 5 ___________ ___________ ; [ 3x z 3 2 5r s 5s + 6r _______ 2x 1 _____________ ; x z _____ 1 z + 2 _____ 624 ______ 22 2 15x y ] [ 2ac2 2x3z ] 3 2 12a3bc + 1 _____ 1 1 __________ 2 3 12a3bc 9b c 2 x b ______________ 7ab 3b2 4a2 ___ ; [ 3a ] a2b2 2 3y 2x z 3y 1 _____ + ____ _________ x2y 4a 1 2a + 3a 5 ______ + 623 ___________ 2 ab [ 4ab x 3 ] 2 y(x 1) 3 ________ ____ ; 5x 2x 1 ______ 3x 2 ___________ rs ab 6u v 2 6r 2s 5r2 3s _______ + 622 _______ 2 2 2 rs 2 2 2 2 2 ] xy (a + b) 30uvt + 4vz 7 _______ ______________ ; [ 2x y y _______ xy ab 2c 2c + 5ab b 621 _____ ____2 _________ 2 2 2 15a b 2 2a 3b _______ 4a 5b _______ 4 6ac 2 [ 4abx2 ab 2 ] (ab2 + 3) _____ a+b ________ ; [ abx ] 6a2b 2 2 2 2 2a 3b ________ a + 4b _______ + 2 14v x + 5xy y 3x 4a ___________ ________ ; bx a ] x2y x 5a ___________ 3u 4v 28 ___ 5t 2z 7 618 ___ + ____ _____ 2 2 2 a b ______ b + 2a a + b _________ 619 _____ + 2 2 2 2 [ 2 x ax 6u v 2 [ 8b ; a + 1 _____ b 1 _____ 6a ] x x y y + 4x ____________ x + 3x 4y ___________ ; 2v 4a b 2 ___ b 617 ________ 1 2 4a b ab [2; 0] x2 xy x + 3y ______ 2x y ______ + 3u v 2 2 2rs x ] 2a2b 2 a 3 ab + 1 616 __2 + ____ ______ 2 uv x2 (x + 1) a + b _______ ______ ; 5u 2v _____ u+4 _______ 4a b c(b 2a) 3x + 2 ________ ______ ; [ 615 ___ + ______ + ______ 4ab ] a x 3 x ______ 4 + 2x _2_ + _____ x x 2 2 2r s _______ 4r 2s ______ 613 1 + __ _____ 3a b 2 ( x + x + 1)(x 1) ___________ 2a + a 2 _________________ ; [ ab 2a a x + 1 __ 1 _____ [ x ; x] ab 3 3 [ 2 4 4 3 2 6 9a b 3a b 2a b + 2a b 12 _______________________________ 4 4 12a b ]