<prompt> Kwa kuzingatia kwamba x - frac1x i sqrt2, find x2187 - frac1x2187.  <response>: Squaring x - frac1x i sqrt2, tunapatax2 - 2 frac1x2 -2.Kwa hivyo, x2 frac1x2 0, hivyo x4 1 0, au x4 -1.Kishax2187 x4546 cdoti x3 x3,hivyoanzaalignx2187 - frac1x2187 x3 - frac1x3 kushoto x - frac1x kulia kushoto x2 1 frac1x2 kulia i sqrt2.mwishopanga 