Answer:
155v^4
Step-by-step explanation:
620v
-20v(-31)
-20×v×(-31)
-20v×-31
Step-by-step explanation:gsgsbwbw
Hshsh
-4
-36v+42=186
-36v=144
v=-4
105 = 100,000 x 6.78 = 678,000