The tangent at \( \left(t, t^{2}-t^{3}\right) \) on the curve \( y=x^{2}-x^{3} \) meets the curv...

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The tangent at \( \left(t, t^{2}-t^{3}\right) \) on the curve \( y=x^{2}-x^{3} \) meets the curve again at \( Q \), then abscissa of \( \mathrm{Q} \) must be:
(a) \( 1+2 t \)
(b) \( 1-2 t \)
(c) \( -1-2 t \)
(d) \( 2 t-1 \)
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