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Can you please help me simplify (1+4i)^2
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4 votes
Can you please help me simplify (1+4i)^2

User Anis KCHAOU
by
4.1k points

1 Answer

3 votes

Answer:

−15+8i

Step-by-step explanation:

First, you can expand the square of the bynomial:

(1+4i)2=1+8i+16i2

Since

i2=−1

the given expression becomes:

1+8i−16=−15+8i

User Ftexperts
by
4.3k points
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