Answer:
10m^2 + 73m - 56
Explanation:
First you want to distribute it, 10m(m + 8) - 7 (m + 8)
And again: 10m^2 + 80m - 7 (m + 8)
And one last time: 10m^2 + 80m - 7m - 56
Then you want to combine the like terms: 10m^2 + 73m - 56
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