The value of
.
Step-by-step explanation:
Given that,
An expression, 
To find,
Solve the expression for A.
Solution,
We have,

Dividing both sides of the given equation for
. So,

So, the value of A is,
.
Reference,
brainly.com/question/2741436
I'm assuming you want to simplify the expression since it's not equal to anything.. you can't solve for "a" unless it's equal to something.
factor
8a³ - 2a²+ 12a - 3
2a²(4a - 1) + 3(4a -1)
(4a - 1) is a like term that can be combined further.
(2a² + 3)(4a - 1)
We need 2880 person-hours and we have 12 people.
When we divide the work between them: 2880/12 = 240 hours required to complete.
The answer to this question is the number 6