👤

Sagot :

Bonjour

K= (9 - 2x)(2x + 7) - 2x(8x + 4)​

= 18x + 63 - 4x² - 14x - 2x(8x + 4)

= 18x + 63 - 4x² - 14x - 16x² - 8x

= -4x + 63 - 4x² - 16x²

= -4x + 63 - 20x²

= -20x² - 4x + 63

Solution : -20x² - 4x + 63

© 2024 IDNLearn. All rights reserved.