1.

nd16. If 2x4ind:2xnd8xnd

Answer»

2x – 1/2x = 4Cubing on both sides(2x – 1/2x)³ = 4³8x³ – 1/8x³ –3×2x×1/2x×(2x–1/2x) = 648x³ – 1/8x³ –3×4 = 648x³–1/8x³ = 64+128x³ – 1/8x³ = 76



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