Find x if 17+12x=(x+1)^4. There are 4 possible solutions, including two complex solutions.
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1 Answer

Given 17+12x=(x+1)^4
x = -√2
x = √2
x = -2-2i
x = -2+2i

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by Level 8 User (30.1k points)
You haven't shown your working:
So x^2=2 and x=sqrt(2) or -sqrt(2), or x^2+4x+8=0.
x^2+4x+4+4=0; (x+2)^2=-4, x+2=-2i or 2i, and x=-2-2i or -2+2i.

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