-4+(x-15)+3
=-4+x-15+3
=x-19+3
=x-16
nhớ k mk nha
Các câu hỏi tương tự
cho bieu thuc A = /x-1/ + 3x-7
a. rut gon bieu thuc
b. tinh A khi x=3;x=-5
rut gon bieu thuc sau : (-12).(-2)-[|-3|^2-(-2)^3.3]/(-3)^3
rut gon bieu thuc:(1/2+1)(1/3+1)(1/4+1).....(1/99+1)
Rut gon bieu thuc sau: 472*524/216= ?
- rut gon bieu thuc sau :123 .(125.127 -125.87) +87.125.123 -123.125.126
rut gon bieu thuc sau (voi x<-1,3)
a) A= /x+1,3/ - /x-2,5/
b) B =/-x-1,3/+/x-2,5/
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!!!!
rut gon bieu thuc
|a| . a