Các câu hỏi tương tự
Rut gon bieu thuc: (a-b+c)^2+2(a-b+c)(b-c)+(b-c)^2
rut gon bieu thuc
(a+b-c)2+(a-b-c)2+(b-c-a)2+(c-b-a)2
rut gon bieu thuc
(a+b-c)2+(a-b+c)2-2(b-c)2
Rut gon bieu thuc : (a+b-c)2 + (a-b+c)2 -2(b-c)2
rut gon bieu thuc
(a+b)\(^2\)+(b+c)\(^2\)+(c+a)\(^2\)-3(a+b)(b+c)(c+a)
cho a,b,c khac nhau doi mot va 1/a+1/b+1/c=0.rut gon cac bieu thuc
N=bc/a^2+2bc+CA/B^2+2AC+AB/C^2+2AB
rut gon bieu thuc sau:
(a2+b2+c2)-(a2+b2+c2)2
(a+b+c)\(^3\)-(b+c-a)\(^3\)-(a+c-b)\(^3\)-(a+b-c)\(^3\)
rut gon bieu thuc
cho \(\frac{1}{a}+\frac{1}{b}+\frac{1}{c}=0\) va a,b,c khac 0. Rut gon bieu thuc N=\(\frac{1}{a^2+2ab}+\frac{1}{b^2+2ca}+\frac{1}{c^2+2ab}\)