Các câu hỏi tương tự
tinh tong gia tri bieu thuc :
a)A=1+1/3+1/5+...+1/97+1/99/1/1*99+1/3*97+1/5*95+...+1/97*3+1/99*1
b)B=1/2+1/3+1/4+...+1/100/99/1+98/2+97/3+...+1/99
gia tri cua bieu thuc
1-2+3-4+...+99-100
tinh gia tri bieu thuc :A= [100-1].(100-2 ).[100-3]......[100-n]
tinh gia tri bieu thuc A =100+98+96+94+...+2-1-3-5-7-9-...-95-97
Tinh gia tri bieu thuc
A = 1 + (-3) +5 + (-7)+............+ 97 + (-99) + 101
tinh gia tri bieu thuc: B=1*2*3+2*3*4+3*4*5+...+17*18*19
\(E=\left(25\%+\dfrac{1}{3}+0,75\right):\left(4\dfrac{3}{4}-3\dfrac{1}{2}\right)\)
tinh gia tri bieu thuc
tinh gia tri bieu thuc
1/2x+2/3(x-1)=1/3
tim gia tri cua bieu thuc
A=1-2-3-4+5-6-7-8+9-10-11-12+...........+97+98-99-100