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18 votes
Simplify
(5+i) (2+3i)

User Lefloh
by
9.0k points

2 Answers

8 votes

Answer:

7+17i

Explanation:

(5+i)(2+3i)

Multiply complex numbers 5+i and 2+3i like you multiply binomials.

By definition,
i^(2) is -1.

5×2+5×(3i)+2i+3(−1)

Do the multiplications.

10+15i+2i−3

Combine the real and imaginary parts.

10−3+(15+2)i

Do the additions.

7+17i

User Felixfbecker
by
8.2k points
1 vote

Answer:

5+1=6,2+3=5 6times 5is equal 30

User Impossibility
by
7.5k points

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