حل / حلول المعادلة:
bold italic x to the power of bold 2 bold space bold space bold plus bold 8 bold italic x bold plus bold 7 bold equals bold 0
begin mathsize 18px style bold italic x bold space bold equals bold space bold minus bold 1
bold italic o bold italic r bold space
bold italic x bold space bold equals bold space bold minus bold 7 end style
begin mathsize 18px style bold italic x bold space bold equals bold space bold 1 bold space bold space
bold italic o bold italic r
bold italic x bold equals bold 7 end style
مستحيلة الحل
begin mathsize 18px style bold italic x bold space bold equals bold space bold 0 end style