Answer: -7/2
Step-by-step explanation:
No, a cubic equation can not have three complex roots. This is because it turns twice and one end goes to positive infinity and one end goes to negative infinity. Thus, one of these MUST cross the x-axis at some point, meaning y = 0 and a real root exists.
Yes, a cubic equation can have three real roots if it cuts the x-axis three times.
I can only guess that you meant to write
12 + 3 = 3 + 12
which would be the commutative property of addition.
Answer:
Hence, the hourly rental fee is
.
Step-by-step explanation:
Time for which Roberto rented the truck
hours.
Rental fee 
Time for which Allison rented the truck
hours.
Rental fee 
Both companies have the same hourly rental fee.
Let the hourly rental fee of both the companies be
.
Both spent the same amount.
So, according to the question,





Hence, the hourly rental fee is
.
Answer:
-2, 5.5
The best way to do this is to draw a graph.