Question

Add the following algebraic expression:

3a²b, − 4a²b, 9a²b

Answer 1

To add the like terms, we proceed as follows:

\[3 a^2 b + \left( - 4 a^2 b \right) + 9 a^2 b\]

\[ = 3 a^2 b - 4 a^2 b + 9 a^2 b\]

\[ = \left( 3 - 4 + 9 \right) a^2 b         (\text { Distributive law }) \]

\[ = 8 a^2 b\]