Question Video: Addition of Algebraic Expressions | Nagwa Question Video: Addition of Algebraic Expressions | Nagwa

Question Video: Addition of Algebraic Expressions Mathematics • First Year of Preparatory School

Join Nagwa Classes

Attend live Mathematics sessions on Nagwa Classes to learn more about this topic from an expert teacher!

Add 7𝑎𝑏 − 2𝑐²𝑑² − 𝑒³𝑓² to 8𝑒³𝑓² − 9𝑐²𝑑² − 5𝑎𝑏.

01:37

Video Transcript

Add seven 𝑎𝑏 minus two 𝑐 squared 𝑑 squared minus 𝑒 cubed 𝑓 squared to eight 𝑒 cubed 𝑓 squared minus nine 𝑐 squared 𝑑 squared minus five 𝑎𝑏.

In order to add these two expressions, we need to collect or group the like terms. Seven 𝑎𝑏 minus five 𝑎𝑏 is equal to two 𝑎𝑏. Negative two 𝑐 squared 𝑑 squared minus nine 𝑐 squared 𝑑 squared is equal to negative 11𝑐 squared 𝑑 squared, as negative two minus nine equals negative 11. Negative 𝑒 cubed 𝑓 squared plus eight 𝑒 cubed 𝑓 squared is equal to seven 𝑒 cubed 𝑓 squared, as negative one plus eight is equal to seven.

This means that our final answer is two 𝑎𝑏 minus 11𝑐 squared 𝑑 squared plus seven 𝑒 cubed 𝑓 squared. We could rewrite these three terms in any order as long as the two 𝑎𝑏 is positive, the 11𝑐 squared 𝑑 squared is negative, and the seven 𝑒 cubed 𝑓 squared is positive. For example, the answer could also be written seven 𝑒 cubed 𝑓 squared minus 11𝑐 squared 𝑑 squared plus two 𝑎𝑏.

Join Nagwa Classes

Attend live sessions on Nagwa Classes to boost your learning with guidance and advice from an expert teacher!

  • Interactive Sessions
  • Chat & Messaging
  • Realistic Exam Questions

Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy