Take out the constants.
\[-(700\times 25){x}^{3}x{y}^{2}yBY\]
Simplify \(700\times 25\) to \(17500\).
\[-17500{x}^{3}x{y}^{2}yBY\]
Use Product Rule: \({x}^{a}{x}^{b}={x}^{a+b}\).
\[-17500{x}^{3+1}{y}^{2+1}BY\]
Simplify \(3+1\) to \(4\).
\[-17500{x}^{4}{y}^{2+1}BY\]
Simplify \(2+1\) to \(3\).
\[-17500{x}^{4}{y}^{3}BY\]
Regroup terms.
\[-17500BY{x}^{4}{y}^{3}\]
-17500*BY*x^4*y^3