Question

slove this please if u don't know don't send answer​

Answer 1

Answer:

${ - 4}^{m + 7} + { - 4}^{8} = { - 4}^{17} \\ { - 4}^{m + 7 + 8} = { - 4}^{17} \\ { - 4}^{m + 15} = { - 4}^{17} \\ m + 15 = 17 \\ m = 17 - 15 \\ m = 2$