Sagot :
Bonjour,
2(3x-7)+(2x-1) (7-x)
= 6x - 14 + 14x - 2x² - 7 + x
= - 2x² + 6x + 14x + x - 14 - 7
= - 2x² + 21x - 21.
Bonjour,
[tex]A=2(3x-7)+(2x-1)(7-x)\\A=6x-14+14x-2x^2-7+x\\A=-2x^2+21x-21[/tex]
Bonjour,
2(3x-7)+(2x-1) (7-x)
= 6x - 14 + 14x - 2x² - 7 + x
= - 2x² + 6x + 14x + x - 14 - 7
= - 2x² + 21x - 21.
Bonjour,
[tex]A=2(3x-7)+(2x-1)(7-x)\\A=6x-14+14x-2x^2-7+x\\A=-2x^2+21x-21[/tex]