master
<math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>c</mi><mn>0</mn></msub><mfenced close=")" open="("><mn>0</mn></mfenced><mo>=</mo><mo>-</mo><mrow><mn>1</mn></mrow><mrow><mn>3</mn></mrow></math>