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E-STAR - Student
E-Lecture - Addition and Subtraction of Surds

Surds can be added or subtracted only if they are like surds, that is, if they have the same value under the radical sign.

Key Point
In general, we have addition or subtraction law of surds with the same radicals.

  1. Addition law of surds with the same radicals
  2. Subtraction law of surds with the same radicals.