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Algebraic Expressions and Identities — Maths STD 8 — Question

Maharashtra BoardEnglish MediumSTD 8MathsAlgebraic Expressions and Identities2 Marks
Question
Add the following algebric expressions:
$3 a^2 b-4 a^2 b, 9 a^2 b$
✓

Answer

To add the like terms, we proceed as follows:
$3 a^2 b+\left(-4 a^2 b\right)+9 a^2 b$
$=3 a^2 b-4 a^2 b+9 a^2 b \text { (Distribute Law) }$
$=(3-4+9) a^2 b$
$=8 a^2 b$

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