Các câu hỏi tương tự
cho bieu thuc:
A=(6-2/3+1/2)-(5+5/3-3/2)-(3-7/3+5/2)
hay tinh gia tri cua A theo hai cach
cach 1:truoc het tinh gia tri tung bieu thuc trong ngoac
cach 2:bo dau ngoac roi nhom cac so hang thich hop
rut gon bieu thuc:
A=2/7+2/5+2/17-2/293
-----------------------------------
3/7+3/5+3/17-3/293
Bai 1: Rut gon bieu thuc sau
B=(2/3)^3×(-3/4)^4×(-1)^5/(2/5)^2 × (-5/12)^3
Bai 2: Tim ia tri bieu thuc sau
M= 512- 512/2- 512/2^2- 512/2^2 - 512/2^3...512/2^10
Moi nguoi giup minh vs:
Rut gon bieu thuc:
a, 5^n +5^(n+2)
b,2/3. 3^(n-1)
tim tong cac he so cua da thuc nhan duoc sau khi bo dau ngoac trong bieu thuc (3-4x+x^2)^2006.(3+4x+x^2)^2007
Rut gon bieu thuc B=3/2-(3/2)^2+(3/2)^3-.........(3/2)^2014
rut gon bieu thuc
B=1/2+(1/2)^2+(1/2)^3+...+(1/2)^99
thu gon bieu thuc A=(1-1/1+2)*(1-1/1+2+3)...(1-1/1+2+3+...+2016)
Neu 3 cach viet cua so huu ti -3/5 va bieu dien no tren truc so