Sagot :
bjr
B = 7x² + 5x +3 - 8x - 4
= 7x² + 5x + 3 - 8x -4 on rassemble les termes en x et les termes
constants
= 7x² + 5x - 8x + 3 - 4
= 7x² + (5x - 8x) + ( 3 - 4) [ 5x - 8x = (5 - 8)x = -3x ]
= 7x² -3x - 1
bjr
B = 7x² + 5x +3 - 8x - 4
= 7x² + 5x + 3 - 8x -4 on rassemble les termes en x et les termes
constants
= 7x² + 5x - 8x + 3 - 4
= 7x² + (5x - 8x) + ( 3 - 4) [ 5x - 8x = (5 - 8)x = -3x ]
= 7x² -3x - 1