Answers created by Josephine

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• Simply the expression: 7x (1-9)?
  
• How do you subtract `\frac { 2} { 2r - 1} - \frac { 2r } { 3r + 4}`?
  
• How do you multiply `\sqrt { 2b ^ { 6} } \sqrt { 10b ^ { 4} }`?
  
• Question #85c18