Bonjour,
[tex](5x - 7)( - 3x + 2)( - 3x + 5)[/tex]
[tex] = ( - 15 {x}^{2} + 10x + 21x - 14)( - 3x + 5)[/tex]
[tex] = ( - 15 {x}^{2} + 31x - 14)( - 3x + 5)[/tex]
[tex] = 45 {x}^{3} - 75 {x}^{2} - 93x {}^{2} +155x + 42x - 70 [/tex]
[tex] = 45 {x}^{3} - 168 {x}^{2} + 197x - 70[/tex]