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Question
Multiply:
3ab − 4b by 3ab
Sum
Solution
(3ab − 4b) × 3ab
= 3ab × 3ab − 4b × 3ab
= 3 × 3a1+1× b1+1 − 4 × 3 × a × b1+1
= 9a2b2 − 12ab2
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Concept for Unknowns Through Examples with Simple Contexts (Single Operations)
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