Question

( 5^{x} cdot 3^{x}-25 cdot 3^{x}-9 cdot 5^{x}+225 geqslant 0 )
( 5^{x}left(3^{x}-9right)-25left(3^{x}-9right) geq 0 )
( quadleft(3^{x}-9right)left(5^{x}-25right) geqslant 0 )
both tre
( begin{array}{rl}3^{x}-9 geqslant 0 Rightarrow x geqslant 2 & text { both are } 5^{x}-25 geqslant 0 Rightarrow x geqslant 2 & 3^{x}-9 leq 0 quad Rightarrow x leq 2end{array} )

# F-9 Solve the following inequalities (i) 15% - 25.3* – 9.5% + 2252 0

Solution