10. Add : 2m²+3m-9, m-m²+5, 3-m²-5m
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Answered by
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Answer:
2m^2 + 5m - 3
= 2m^2 + 6m - m - 3
= 2m (m+3) - 1(m+3)
= (m+3)(2m - 1)
Explanation:
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