Các câu hỏi tương tự
x+2x+4x+...+125x+126x bang cach thu gon cac bieu thuc sau:
Thu gon cac bieu thuc sau
7x - 19x + 6x
-ab - ab
Rut gon bieu thuc sau:T=(1/2+1).(1/3+1). (1/4+1)....(1/98+1).(1/99+1)
Rut gon bieu thuc sau : A=3x5x7x11x13x37-10101 / 1212120+40404
giup minh voi cac ban oi!!!!
Thu gon bieu thuc sau roi tim gia tri cua x de bieu thuc co gia tri la so am
7 × -19 × x + 6 × x
thu gon bieu thuc sau:
135.234+135.324-135.556
thu gon bieu thuc
cho A = 1+3+ 32 +33+ ... + 32015
thu gon bieu thuc sau:
x+2x+3x+4x+...+125x+126
thu gon roi tinh bieu tri cua bieu thuc;
d=(10-a+b)-(10-b+c)-(10-c-a)