What is the standard form of (7-5i)(2+3i)?
A.-29+11i
B.29+11i
C. 11-29i
D.-11+29i
2 answers:
Answer:
B) 29 + 11i.
Step-by-step explanation:
Given : (7-5i)(2+3i).
To find : What is the standard form .
Solution : We have given (7-5i)(2+3i).
Distributes 7 over (2+3i) and 5i over (2+3i).
7 (2+3i) - 5i (2+3i).
14 + 21i - 10 i - 15 i².
Combine like terms.
i² = -1.
14 + 21i -10i - 15(-1).
14 + 11i + 15.
14 + 15 + 11 i.
29 + 11i.
Therefore, B) 29 + 11i.
It might be the last one but I don't know
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