Question

. xy(3x² – 2y2) - yz(2y2 - 3x2) + zx(15x2 - 10y2)​

Answer 1

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Answer 2

$xy(3 {x}^{2} - 2 {y}^{2} ) - yz(2 {y}^{2} - 3 {x}^{2} ) + zx(15 {x}^{2} - 10 {y}^{2} )$

$=xy(3 {x}^{2} - 2 {y}^{2} ) + yz(3 {x}^{2} - 2 {y}^{2} ) + 5zx(3 {x}^{2} - 2 {y}^{2} )$

$=(3 {x}^{2} - 2 {y}^{2} )(xy + yz + 5zx)$