Question

-2m2 -3mn -3m2 add this following terms​

Answer 1

-5m^2 - 3mn

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Answer 2

Answer:

Horizontal Method: In this method, all expressions are written in a horizontal line and then the terms are arranged to collect all the groups of like terms and then added.

Column Method: In this method each expression is written in a separate row such that there like terms are arranged one below the other in a column. Then the addition of terms is done column wise.

Following illustrations will illustrate these methods.