Answer:
foil (x+1)^2 and (x-3)^2 first,
x^2+2x+2 and x^2-6x+9
x^2+2x+2 + x^2-6x+9=15 combine like terms
2x^2-4x+11=15 transpose 15 to the left side
2x^2-4x-4=0 rhe roots are
(x+0.7320)(x-2.7320)
x= -0.7320 and x= 2.7320
well more technically this is the decimal values of that do note that the roots are imaginary
