* + *, msub > * + * { font-size: smaller }" ?> a = L C - L A ⁢ S C S A - S B + L B ⁢ S C S A - S B + L A ⁢ S A S A - S B - L B ⁢ S A S A - S B - L A S C 2 + S B 2 ⁢ S C S A - S B - S A 2 ⁢ S C S A - S B - S A 2 - S B 2 ⁢ S A S A - S B + S A 3 S A - S B