14 dez 2015, 14:43
No universo de U=R, a equação \(27^{x+1}-9^{x}=0\) tem 1 raiz, calcule
14 dez 2015, 15:35
\((3^3)^{x+1}=(3^2)^x\Leftrightarrow
3^{3x+3}=3^{2x}\Leftrightarrow
3x+3=2x\Leftrightarrow
x=-3\)
Powered by phpBB © phpBB Group.
phpBB Mobile / SEO by Artodia.