Question

simplify the following
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Answer 1

Answer:

$( {2m}^{2} + 4m - 5 ) - ( {6m}^{2} + 2m + 4 ) + ( {10m}^{2} + 9 ) \\ \\ = {2m}^{2} + 4m - 5 - {6m}^{2} - 2m - 4 + {10m}^{2} + 9 \\ \\ = {12m}^{2} - {6m}^{2} + 6m - 9 + 9 \\ \\ = {6m}^{2} + 6m \\ \\ =6m (m + 1) \: \: \: \: (ans.)$

Step-by-step explanation:

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