Step-by-step explanation:
Complex roots or imaginary roots must come in conjugate pairs. If -4i is a root, that means 4i is also a root.
A possible polynomial is:
y = (x + 4i) (x − 4i)
y = x² − 16i²
y = x² + 16
Answer:
(-2, 5)
Step-by-step explanation:
The form you're trying to match is the vertex form of the equation of a parabola:
y = a(x -h)^2 +k . . . . . . . vertex (h, k)
You have ...
y = -4(x +2)^2 +5
Comparing forms, you see that a=-4, h=-2, k=5.
Then the vertex (h, k) is (-2, 5).
I'm going to write out the work and take a pic. hope this helps you understand if not, feel free to ask me Q's! :)
Answer:
x=-26
Step-by-step explanation:
Distributive property first (both sides)
you would get
4x+2 = 3x-24
next you will subtract 3x from both sides
1x+2=-24
add 24 to both sides
1x+26=0
move 26 to the other side but since you flipped it you have to make it negative
x=-26
Answer:
360
Step-by-step explanation:
you have to multiply 50 by 90 to get 4,500, then you multiply the number of defective ones by the same number.
