Sagot :
bjr,
2x * x + 2x * 2 - 3 * x - 3 * 2 - 5 * 2x - 5 * - 3 = 2x² + 4x - 3x - 6 - 10x + 15 = 2x² - 9x + 9.
bonjour
[tex]( 2 x - 3 ) ( x + 2 ) - 5 ( 2 x - 3 ) \\= 2 x^{2} + 4 x - 3 x - 6 - 10 x + 15 \\= 2 x^{2} - 9 x + 9 \\\\[/tex]
bjr,
2x * x + 2x * 2 - 3 * x - 3 * 2 - 5 * 2x - 5 * - 3 = 2x² + 4x - 3x - 6 - 10x + 15 = 2x² - 9x + 9.
bonjour
[tex]( 2 x - 3 ) ( x + 2 ) - 5 ( 2 x - 3 ) \\= 2 x^{2} + 4 x - 3 x - 6 - 10 x + 15 \\= 2 x^{2} - 9 x + 9 \\\\[/tex]