Question

solve for x ∈ c:$x^{2}$-(2+i)x=1-7i

Answer 1

x^2-2x-ix=1-7i
so 
-x=-7
x=7...........................1
x^2-2x=1
x^2-2x-1=0
(x-1)^2=0
x=1..........................2