Verified answer

1 и 2

4xy * 2y²x * 2xy² = 4yx³ * 4y⁴

2 и 4

4yx * 2x² * 2y³x = 2y²x * 8y²x³

3 и 3

2x² * 2t² * 4x = 4x³t * 4t

4 и 1

x²t * 4x * 3t² = 2t² * 2x²t * 3x