Thu gon bieu thuc sau
7x-19x+6x
-ab-ab
Lm giup mk voi dag gap
x+2x+4x+...+125x+126x bang cach thu gon cac bieu thuc sau:
thu gon cac bieu thuc sau
1215*98*1254
119 * 3 16*255
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 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)
thu gọn các biểu thức sau
a) 7x-19x+6x
b) -ab-ab