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Question
Find the product of a + b − c and 2a − 3b
Sum
Solution
(a + b − c) × (2a − 3b)
= 2a × (a + b − c) − 3b × (a + b − c)
= 2a2 + 2ab − 2ac − 3ab − 3b2 + 3bc
= 2a2 − ab − 2ac − 3b2 + 3bc
= 2a2 − ab − 2ac + 3bc − 3b2
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Concept for Unknowns Through Examples with Simple Contexts (Single Operations)
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