Các câu hỏi tương tự
- rut gon bieu thuc sau :123 .(125.127 -125.87) +87.125.123 -123.125.126
123. (125.127- 125 .87) +87.125.123 -123 .125.126
thu gon bieu thuc sau:
135.234+135.324-135.556
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
x+2x+4x+...+125x+126x bang cach thu gon cac bieu thuc sau:
thu gon bieu thuc sau:
x+2x+3x+4x+...+125x+126
Thu gon cac bieu thuc sau
7x - 19x + 6x
-ab - ab
thu gon roi tinh bieu tri cua bieu thuc;
d=(10-a+b)-(10-b+c)-(10-c-a)
thu gon cac bieu thuc sau
1215*98*1254
119 * 3 16*255