Answer:
c
Step-by-step explanation:
Explain The question with more detail
Answer:
−15+8i
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
Answer:
9x^4 -x
Step-by-step explanation:
( -8x + 3x^4 ) - ( -7x - 6x^4 )
Distribute the minus sign
( -8x + 3x^4 ) +7x + 6x^4
Combine like terms
3x^4 + 6x^4 -8x +7x
9x^4 -x