2 x 2 ( 3 x 5 − 7 + 5 x ) {\displaystyle \ 2x^{2}(3x^{5}-7+5x)\ }
( 2 x 2 − 5 ) ( 3 x 2 − 4 ) {\displaystyle (2x^{2}-5)(3x^{2}-4)}
