$\color{#FF6800}{ 25 } \times 25$
$ $ Represents an integer as a product of decimal numbers $ $
$\color{#FF6800}{ 5 } ^ { \color{#FF6800}{ 2 } } \times 25$
$5 ^ { 2 } \times \color{#FF6800}{ 25 }$
$ $ Represents an integer as a product of decimal numbers $ $
$5 ^ { 2 } \times \color{#FF6800}{ 5 } ^ { \color{#FF6800}{ 2 } }$
$\color{#FF6800}{ 5 } ^ { \color{#FF6800}{ 2 } } \times \color{#FF6800}{ 5 } ^ { \color{#FF6800}{ 2 } }$
$ $ Add the exponent as the base is the same $ $
$\color{#FF6800}{ 5 } ^ { \color{#FF6800}{ 2 } \color{#FF6800}{ + } \color{#FF6800}{ 2 } }$
$5 ^ { \color{#FF6800}{ 2 } \color{#FF6800}{ + } \color{#FF6800}{ 2 } }$
$ $ Add $ 2 $ and $ 2$
$5 ^ { \color{#FF6800}{ 4 } }$