thuc hien phep tinh bang cach hop li neu co the 30-[50-(9-4)2]+20150
thuc hien cac phep tinh sau 1 cach hop ly (3.4.2^16)^2/11.2^13.4^11-16^0
thuc hien phep tinh bang cach hop ly(neu co the) a)248:{[(368+232):120-3]+122}+2011 b) -243+(319:314+28:25)
thuc hien phep tinh bang cach hop li neu co the 37x96-86x37+2x23x5-30+4x16x25
tinh theo cach hop li
[-1]+2+[-3]+4+[-5]+6+.....+[-2005]+2006+[-2007]+2008+[-2009]+2010
thuc hien cac phep tinh sau bang cach hop li nhat
a] 38+41+117+159+62
b] 73+86+968+914+3032
c]341.67+34116+658+83
d]4253+47156-47114
khong thuc hien phep tinh hay cho biet chu so hang don vi cua moi ket qua sau
A, (2001+2002+2003+2004+..........+2007+2008+2009) - (21+32+43+54+......+98+119
)
B, (12+23+34+45+........+78+89+91) • 91•73•55•37•19
Chu y: ^•^ la nhan
Ai lam dung mk cho 2 tk viet ro CAU tra loi ko tom tat !!!
Thuc hien cac phep tinh mot cach hop li nhat:
1 + \(\frac{1}{2}\)x (1 + 2) +\(\frac{1}{3}\)x (1 + 2 + 3) + \(\frac{1}{4}\)x (1 + 2 + 3 + 4) +......+\(\frac{1}{20}\) x (1 + 2 +...+ 20)
Giải chi tiết hộ mình nha!!!!!!!!
1:" thuc hien phep tinh : (-1)+2-3+4-....-99+100