Question

15m square - 9 m+ 6m-14m square+6m-5 answer immediately​

Answer 1

Answer:

${15m}^{2} - 9m + 6m - {14m}^{2} + 6m - 5 \\ = ({15m}^{2}- {14m}^{2}) + (- 9m + 6m+ 6m) - 5 \\ = {m}^{2} + 3m - 5$