من المعادلة:
begin mathsize 18px style bold italic x to the power of bold 2 bold space bold space bold space bold minus bold space bold 16 bold space bold equals bold space bold 0 end style
نجد من المعادلة أن قيمة begin mathsize 18px style bold italic c end style ( الحد الثابت):
begin mathsize 18px style bold 1 end style
begin mathsize 18px style bold 0 end style
begin mathsize 18px style bold 16 end style
begin mathsize 18px style bold minus bold 16 end style
