I'm not sure I'm interpreting the question correctly but I'll answer it as best I can.
( 5 x 4 y ) 3 × x 2 y = 125 x 12 y × x 2 y = 125 x 14 y
The simplified expression of 5 x 4 y 3 × x 2 y is 5 x 6 y 4 . This is achieved by multiplying the coefficients and adding the exponents of like bases. The process follows the laws of exponents during multiplication.
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