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प्रश्न
Copy and complete the following multi-plication:
2a - b + 3c
× 2a - 4b
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उत्तर
2a - b + 3c
× 2a - 4b
4a2 - 2ab + 6ac
- 8ab + 4b2 - 12bc
4a2 - 10ab + 6ac + 4b2 - 12bc
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