MathematicsMedium53×since 2002Q3162Let the complex number z=x+iyz = x + iyz=x+iy be such that 2z−3i2z+i{{2z - 3i} \over {2z + i}}2z+i2z−3i is purely imaginary. If x+y2=0{x} + {y^2} = 0x+y2=0, then y4+y2−y{y^4} + {y^2} - yy4+y2−y is equal to :A43{4 \over 3}34B32{3 \over 2}23C34{3 \over 4}43D23{2 \over 3}32Check answerSkip