Given that x = -2 - 3i and y = 4 + 2i , Match The Expressions.
2 answers:
Answer:




Step-by-step explanation:
Given:


---
1st problem:


Distribute:

Combine like terms:

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2nd problem:



Distribute -3 to first factor:
Use foil to simplify:

Replace
with -1:

Combine like terms:

---
3rd problem:


Distribute 2 to the second factor:


Use foil to simplify:

Replace
with -1:

Combine like terms:

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4th problem:

Distribute:

Combine like terms:

Simplify:

Answer:
3y - 2x --> 16 + 12i
-3x · y --> 6 + 48i
x · 2y --> -4 - 32i
x - y --> -6 - 5i
Step-by-step explanation:
Work each one out.
<u>3y - 2x</u>
3(4 + 2i) - 2(-2 - 3i)
12 + 6i + 4 + 6i
16 + 12i
<u>-3x · y</u>
-3(-2 - 3i) · (4 + 2i)
(6 +9i) · (4 + 2i)
24 + 12i + 26i - 18
6 +48i
<u>x · 2y</u>
(-2 - 3i) · 2(4 + 2i)
(-2 - 3i) · (8 + 4i)
-16 - 8i - 24i +12
-4 - 32i
<u>x - y</u>
(-2 - 3i) - (4 + 2i)
-6 - 5i
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