Which expression can be used to find the difference of the polynomials?(10m – 6) – (7m – 4)

To subtract the second polynomial, change the sign of each of its terms: (10m – 6) – (7m – 4) = 10m – 6 – 7m + 4. Grouping like terms gives [10m + (–7m)] + [(–6) + 4], which is choice A.

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