giup toi giai toan 2^3x5^3-{7^2 x 2^3-5^2x[4^3:8+11^2:121-2 x(37-5 x 7)]}
giup toi giai bai toan nay:
cho a:b=9:4 va b:c=5:3 hay tim ti so (a-b):(b-c)
C/minh:2005a-2006b/2006c+2007d=2005c-2006d/2006a+2007b
Ban nao giai giup minh bai nay voi, minh can trong 3 ngay toi. Tks truoc.
Tim x biet 1+1/2(1+2)+1/3(1+2+3)+...+1/x(1+2+3+...+x)=115
Giup toi voi
Cho F(x)=a*x^3+b*x^2+c*x+d, trong do a,b,c,d la hang so va thoa man b=3a+c Chung to rang f(1)=f(-2)
Toi dang on thi hoc ki -Giup toi voi thank you very much
Cho F(x)=a*x^3+b*x^2+c*x+d, trong do a,b,c,d la hang so va thoa man b=3a+c Chung to rang f(1)=f(-2)
Toi dang on thi hoc ki -Giup toi voi thank you very much
Tim x, y, z biet :
a , x/5 = y/7 va x . y =140
b , x : y : z = 2 : 5 : 7 va 3x + 2y - z =27
Moi nguoi giup minh giai bai nay nha minh can gap
gia tri x >0 thoa man x/3/50=2/3/xla x=
(nhap ket qua duoi dang phan so toi gian)
cac ban giup minh nha
giai ho toi bai tim x
x+|x|=2x
