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2 votes
PLSSS HELPPP Simplify: (2 - i) (4 +2i)

2 Answers

1 vote

Explanation:

( 2 - 1)(4+2)

= (1)(6)

= 6

User Arjun Kori
by
7.9k points
5 votes
10
Expand
(
2

i
)
(
4
+
2
i
)
(
2
-
i
)
(
4
+
2
i
)
using the FOIL Method.
Tap for fewer steps...
Apply the distributive property.
2
(
4
+
2
i
)

i
(
4
+
2
i
)
2
(
4
+
2
i
)
-
i
(
4
+
2
i
)
Apply the distributive property.
2

4
+
2
(
2
i
)

i
(
4
+
2
i
)
2

4
+
2
(
2
i
)
-
i
(
4
+
2
i
)
Apply the distributive property.
2

4
+
2
(
2
i
)

i

4

i
(
2
i
)
2

4
+
2
(
2
i
)
-
i

4
-
i
(
2
i
)
Simplify and combine like terms.
Tap for fewer steps...
Simplify each term.
Tap for more steps...
8
+
4
i

4
i
+
2
8
+
4
i
-
4
i
+
2
Add
8
8
and
2
2
.
10
+
4
i

4
i
10
+
4
i
-
4
i
Subtract
4
i
4
i
from
4
i
4
i
.
10
+
0
10
+
0
Add
10
10
and
0
0
.
User Brthornbury
by
8.0k points

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