在下式中平方符号是^ 立方符号为* 4次方符号为&
(1)2x^-4x (2)8m^n+2mn (3)a^x^y-axy^ (4)3x*-3x^-9x (5)-24x^y-12xy^+28y* (6)-4a*b*+6a^b-2ab (7)-2x^-12xy^+8xy* (8)-3ma*+6ma^-12ma (9)7(a-1)+x(a-1) (10)3(a-b)^+b(b-a) (11)2(m-n)^-m(m-n) (12) x(x-y)^-y(y-x)^ (13)m(a^+b^)+n(a^+b^) (14)18(a-b)*-12b(b-a)^ (15) (2a+b)(2a-3b)-3a(2a+b) (16)x(x+y)(x-y)-x(x+y)^ (17)(m+n)^-n^ (18)49(a-b)^-16(a+b)^ (19)(3x+y)^-(x+2y)^ (20)(x^+y^)^-x^y^ (21)3ax^-3ay& (22)p&-1 (23)a^b^-0.01 (24)x^y-2xy^+y*(25)16-(2a+3b)^ (26)(a^+4)^-16a^ (27)x^-xy+1/4y^ (28)a^x^+16ax+64 (29)a^-8a^b^+16b& (30)9+6(a+b)+(a+b)^ 30道麻烦题只给50分 没分了 不好意思哦,请快速正确的写下 我明天交的 急用 日后重谢。
在下式中平方符号是^ 立方符号为* 4次方符号为&
(1)2x^-4x =2X(X-2);
(2)8m^n+2mn =2mn(4m+1);
(3)a^x^y-axy^=axy(ax-y);
(4)3x*-3x^-9x =3X(X^-X-3);
(5)24x^y-12xy^+28y*=4Y(6X^-3XY+7Y^);
(6)-4a*b*+6a^b-2ab =2ab(-2a^b^+3a-2);
(7)-2x^-12xy^+8xy* =-2X(X+6Y^+4y*);
(8)-3ma*+6ma^-12ma =-3ma(a^-2a+6);
(9)7(a-1)+x(a-1)=(7+x)(a-1);
(10)3(a-b)^+b(b-a)=(a-b)(3(a-b)-b)=(a-b)(3a-4b);
(11)2(m-n)^-m(m-n)=(m-n)(2(m-n)-m)=(m-n)(m-2n);
(12) x(x-y)^-y(y-x)^ =(X-Y)^(X+Y);
(13)m(a^+b^)+n(a^+b^) =(a^+b^)(m+n);
(14)18(a-b)*-12b(b-a)^ =6(a-b)^(3(a-b)-2b)=6(a-b)^(3a-5b);
(15)(2a+b)(2a-3b)-3a(2a+b) =(2a+b)( 2a-3b-3a)=-(2a+b)( a+3b);
(16)x(x+y)(x-y)-x(x+y)^ =x(x+y)((x-y)-(x+y))=-2xy(x+y);
(17)(m+n)^-n^=(m+n+n)(m+n-n)=m(m+2n);
(18)49(a-b)^-16(a+b)^ =(7(a-b)+4(a+b))(7(a-b)-4(a+b))=(11a-3b)(3a-11b);
(19)(3x+y)^-(x+2y)^ =((3x+y)+(x+2y))((3x+y)-(x+2y)) =(4x+3y)(2x-y);
(20))(x^+y^)^-x^y^=(x^+y^+xy)(x^+y^-xy);
(21)3ax^-3ay&=3a(x^-y&)=3a(x+y^)(x-y^);
(22)p&-1=(p^+1)(p^-1)=(p^+1)(p+1)(p-1);
(23)a^b^-0.01 =(ab+0.1)(ab-0.1);
(24)x^y-2xy^+y*=y(x^-2xy+y^)=y(x-y)^;
(25)16-(2a+3b)^ =(4+2a+3b)(4-2a-3b);
(26)(a^+4)^-16a^=(a^+4+4a)(a^+4-4a)=(a+2)^(a-2)^;
(27)x^-xy+1/4y^=(x-y/2)^;
(28)a^x^+16ax+64 =(ax+8)^;
(29)a^-8a^b^+16b&=(a-4b^)^;
(30)9+6(a+b)+(a+b)^ =(3+a+b)^