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.
Answer:
Step-by-step explanation:
Distribute negative sign.
Combine like terms.
Answer:
10439.29640086
Step-by-step explanation:
Answer:
Step-by-step explanation:
The hypotenuse is 
The terminal side of 
is in the second quadrant.
In this quadrant; the secant ratio is negative.
The answer is: [D]: " y = x² + 2x + 2 " .
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