$\frac{ 3 \times {5}^{2} }{ 15 }-\left( 5-{2}^{2} \right)$
Evaluate the power$\frac{ 3 \times {5}^{2} }{ 15 }-\left( 5-4 \right)$
Cancel out the common factor $3$$\frac{ {5}^{2} }{ 5 }-\left( 5-4 \right)$
Subtract the numbers$\frac{ {5}^{2} }{ 5 }-1$
Cancel out the common factor $5$$5-1$
Subtract the numbers$4$