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Question
Add the following algebraic expression:
3a2b, − 4a2b, 9a2b
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Solution
To add the like terms, we proceed as follows:
\[3 a^2 b + \left( - 4 a^2 b \right) + 9 a^2 b\]
\[ = 3 a^2 b - 4 a^2 b + 9 a^2 b\]
\[ = \left( 3 - 4 + 9 \right) a^2 b (\text { Distributive law }) \]
\[ = 8 a^2 b\]
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