a) .... = 213+417+231 = 861
b) .....= 18-95 = -77
Ủng hộ năm mới đi bn!
Đúng 0
Bình luận (0)
Các câu hỏi tương tự
tính giá trị biểu thức a) left|111-324right|+left|-2-415right|+left|354-123right|b) left|-2^3+5^2-35right|-left|3^4-2^5-12^2right|c) 1frac{13}{15}.0,75-left(frac{104}{195}+25%right).frac{24}{47}-3frac{12}{13}:3 d) left(2frac{1}{3}-1frac{1}{9}right):4-frac{3}{4}e)6-frac{left(2,3+5:6,25right).7}{8.0,0125+6,9}g)45frac{10}{63}-44frac{25}{84}
Đọc tiếp
tính giá trị biểu thức
a) \(\left|111-324\right|+\left|-2-415\right|+\left|354-123\right|\)
b) \(\left|-2^3+5^2-35\right|-\left|3^4-2^5-12^2\right|\)
c) \(1\frac{13}{15}.0,75-\left(\frac{104}{195}+25\%\right).\frac{24}{47}-3\frac{12}{13}:3\)
d) \(\left(2\frac{1}{3}-1\frac{1}{9}\right):4-\frac{3}{4}\)
e)\(6-\frac{\left(2,3+5:6,25\right).7}{8.0,0125+6,9}\)
g)\(45\frac{10}{63}-44\frac{25}{84}\)
1) Tinh gia tri cua bieu thuc:
A=\(\frac{\left(1+2+...+100\right)\left(\frac{1}{2}-\frac{1}{3}-\frac{1}{4}-\frac{1}{5}\right)\left(2,4.42-21.4,8\right)}{1+\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+...+\frac{1}{100}}\)
B=\(\frac{4^6.9^5+6^9.120}{-8^4.3^{12}+6^{11}}\)
bai 1 :biet do thi ham so yleft(sqrt{a}-3right)x di qua Nleft(sqrt{5};sqrt{5}right)( a la hang so)vay a?Bai 2:Cho Qleft(xright)ax^2+bx+cthoa man :Qleft(0right)1;Qleft(1right)6;Qleft(2right)5Tinh bbai 3 :tinh gia tri bieu thucA3x+2y+zbiet left(x-3y^2right)+left(y-1right)^2+left(x+zright)^20
Đọc tiếp
bai 1 :
biet do thi ham so y=\(\left(\sqrt{a}-3\right)x\) di qua \(N\left(\sqrt{5};\sqrt{5}\right)\)( a la hang so)
vay a=?
Bai 2:
Cho \(Q\left(x\right)=ax^2+bx+c\)thoa man :
\(Q\left(0\right)=1;Q\left(1\right)=6;Q\left(2\right)=5\)Tinh b
bai 3 :tinh gia tri bieu thuc
\(A=3x+2y+z\)biet \(\left(x-3y^2\right)+\left(y-1\right)^2+\left(x+z\right)^2=0\)
a,Tim GTNN cua bieu thuc \(C=\left(x+2\right)^2+\left(y-\frac{1}{5}\right)^2-10\)
b,Tim GTLN cua bieu thuc \(D=\frac{4}{\left(2x-3\right)^2+5}\)
tinh nhanh gia tri cua bieu thuc voi x,y nhan bat ki gia tri nao:
\(\frac{1}{3}x^2y\left(3xy\right)^2y^4+\frac{1}{2}x\left(-2xy\right)^3y^4+x^4y^7+18\)
Cho a,b,c là cac so thoa man dieu kien \(\frac{2a-b}{a+b}=\frac{b-c+a}{2a-b}=\frac{2}{3}\)
Khi đo gia tri cua bieu thuc \(P=\frac{\left(5b+4a\right)^5}{\left(5b+4c\right)^2.\left(a+3c\right)^3}\)
Tim gia tri nho nhat cua bieu thuc sau :
\(B=\left|x+3\right|+\left|2-x\right|\)
M.N giup em vs
voi gia tri nao cua bien thi bieu thuc sau co gia tri nho nhat,tim gia tri do
\(\left(x-2013\right)^2+\left(y-2014\right)^2-2015\)
bài 2: 1, \(\left(\dfrac{5}{6}\right)^{10}.\left(\dfrac{3}{10}\right)^{10}\)2,\(\left(\dfrac{4}{7}\right)^{19}:\left(\dfrac{-12}{35}\right)^{19}\) 3,\(\left(\dfrac{-3}{7}\right)^7:\left(\dfrac{-3}{5}\right)\)