Let's try to simplify x^2 + 16. It's a sum of two squares:
x^2 + 16 = 0
x^2 = -16
The problem is, we can't take a square root of a negative. This is where imaginary numbers come in.
Remember that square roots have a plus or minus symbol outside:
±√-16 = ±4i
Our two roots are 4i and -4i. Therefore, the trinomial simplifies to:
(x + 4i)(x - 4i)
If we attempt to divide x + 4 by these two binomials, we will find that 4 and 4i are not like terms. Therefore, we can't simplify this expression.
For x y chart 19.36.2.27.13
Answer:
Zero Slope
Step-by-step explanation:
Answer:
fx=5x
Step-by-step explanation:
Recall the definition of absolute value.
When 
,
When ,
The derivative does not exist at 
, since the one-sided limits
and
do not match.
So the derivative of 
is
Now we can write this as
since
and
