27<813:3x<243
A)viet cac so 2^27 va 3^18 duoi dang cac luy rhua co so mu la 9
B)trong hai so 2^27 va 3^18 so nao lon hon
( x-3/5)^2000 + (y+2/5)^1999 be hon hoac bang 0
cho ba so a,b,c thoa man 0be honhoac bang a be hon hoac bang b+1 be hon hoac bang c+2 va a+b+c=1 tim gia tri nho nhat cua c
Cho tam giac ABC CMR neu ha=3,hb=4,hc=5 thi a mu 2 lon hon b mu 2 cong c mu 2
cho f(x)=a(x^2)+bx+c voi a,b,c la cac so huu ti.chung minh f(-2).f(3) be hon hoac bang 0.biet rang 13a+b+2c=0
hai be chua 3980 l dau neu chuyen 500 l dau tu be thu nhat sang be thu hai thi be thu hai se nhieu hon be thu nhat 160 l dau tim so dau moi be
\(\left|x-2016\right|^{2015}+\left|y+2015\right|^{2016}\) be hon hoac bang 0