Selinaid
Answered

Can anybody help me in calculating this inequality?

9^(x-1)+7>0

Sagot :

Bituinid
[tex]\\9^{x-1}+7>0 \\ \\\frac19*9^x>-7 \\ \\9^x>-63 \\ \\x\in R \\ \\a^x>0 \ for \ every \ real \ number \ a>0[/tex]