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Fundamental Operations (Related to Algebraic Expressions) — MATHS STD 6 — Question

ICSE BoardEnglish MediumSTD 6MATHSFundamental Operations (Related to Algebraic Expressions)2 Marks
Question
Multiply $: 3ab − 4b$ by $3ab$
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Answer

$(3ab − 4b) \times 3ab$
$= 3ab \times 3ab − 4b \times 3ab$
$= 3 \times 3a^{1+1}\times b^{1+1} − 4 \times 3 \times a \times b^{1+1}$
$= 9a^2b^2 − 12ab^2$

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