Remove parentheses.
\[C-B+A=CnnAuuCnnB\]
Use Product Rule: \({x}^{a}{x}^{b}={x}^{a+b}\).
\[C-B+A={Cn}^{2}nA{u}^{2}nB\]
Regroup terms.
\[C-B+A={Cn}^{2}nAnB{u}^{2}\]
Add \(B\) to both sides.
\[C+A={Cn}^{2}nAnB{u}^{2}+B\]
Subtract \(A\) from both sides.
\[C={Cn}^{2}nAnB{u}^{2}+B-A\]
C=Cn^2*nA*nB*u^2+B-A
