Answer:
(4i+1)^2
4i^2 + 2(4i) + 1
16(-1) + 8i + 1
-15+8i
8i-15
(x+1) + (x-2)(x+3)
(x+1) + (x^2-2x+3x-6)
(x+1)+x^2+x-6
x+1+x^2+x-6
x^2+2x-5
Let me know if this helps!
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