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प्रश्न
Multiply:
(x + 9y) and (x – 5y)
बेरीज
उत्तर
(x + 9y) × (x − 5y)
= x × (x + 9y) − 5y (x + 9y)
= x2 + 9xy − 5xy − 45y2
= x2 + 4xy − 45y2
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Concept for Unknowns Through Examples with Simple Contexts (Single Operations)
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