<prompt> Tuseme kwamba 4x_15, 5x_26, 6x_37, dots, 127x_124128. x_1x_2cdots x_124 ni nini?  <response>: Kwa kuwa 4x_15, 5x_26,ldots, 127x_124 128, tunayo 472 128 127x_124 kushoto126x_123kuliax_124 126x_123cdot x_124 cdots 4x_1x_2cdots x_124.Kwa hivyo x_1 x_2cdots x_124 frac72. 