What is the remainder when P(x)=x4+2x3−3x2+x−5P(x) = x^4 + 2x^3 - 3x^2 + x - 5P(x)=x4+2x3−3x2+x−5 is divided by x2+1x^2+1x2+1?
−2x−4-2x - 4−2x−4
2x−62x - 62x−6
x−5x - 5x−5
0