Which expressions are equivalent to x
2
+
4
x
2
+4x, squared, plus, 4 ?
Choose all answers that apply:
Choose all answers that apply:

(Choice A)
A
x
+
2
i
x
−
2
i
x−2i
x+2i
​
start fraction, x, plus, 2, i, divided by, x, minus, 2, i, end fraction

(Choice B)
B
(
x
+
4
i
)
(
x
−
i
)
−
3
x
i
(x+4i)(x−i)−3xileft parenthesis, x, plus, 4, i, right parenthesis, left parenthesis, x, minus, i, right parenthesis, minus, 3, x, i

(Choice C)
C
(
x
+
2
i
)
(
x
−
2
i
)
(x+2i)(x−2i)left parenthesis, x, plus, 2, i, right parenthesis, left parenthesis, x, minus, 2, i, right parenthesis

(Choice D)
D
(
x
+
i
)
(
x
+
4
i
)
−
5
x
i
(x+i)(x+4i)−5xileft parenthesis, x, plus, i, right parenthesis, left parenthesis, x, plus, 4, i, right parenthesis, minus, 5, x, i