Question

(a) Find m so that (-5)m+1(-5)7 =(-5)9​

Answer 1

Answer:

m = 2

Step-by-step explanation:

-5m + 7 (-5) = -45

=> -5m -35 = -45

=> -5m = -45 + 35

=> -5m = -10

=> m = -10/(-5)

=> m = 2

Answer 2

base same so power will be added

(-5)m+1+7=(-5)9

m+8=9

m=9-8

m=1