Answer:
Step-by-step explanation:
Complex numbers:
The following relation is important for complex numbers:
Zeros of a function:
Given a polynomial f(x), this polynomial has roots 
such that it can be written as: 
, in which a is the leading coefficient.
Has zeros −19 and −i
If -i is a zero, its conjugate i is also a zero. So
Output of 40 when x=1
This means that when 
. We use this to find the leading coefficient a. So
The polynomial is:
Answer:
No solution.
Step-by-step explanation:
Let us approach this question geometrically . Number of solutions is the number of meeting points of the two graphs . We can see that the given equations are equations of lines . First equation is 5x - y = 3.
Second equation when divided by two can be written as 5x - y = -1.
We can see that these lines are parallel and therefore doesn't intersect.So no solution.
It would be 21 as a percent and 0.21 as a decimal
