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प्रश्न
Multiply:
(12a + 17b) × 4c
योग
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उत्तर
(12a + 17b) × 4c
= 12a × 4c + 17b × 4c
= 12 × 4 × a × c + 17 × 4 × b × c
= 48ac + 68bc
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