👤

Sagot :

VINS

bonjour

A = 7 x -  ( 28 x² - 12 x + 21 x -  9 )

= 7 x - 28 x² + 12 x - 21 x + 9

= - 28 x² - 2 x + 9

B = - 14 + 21 x + 12 x - 18 x² - 8 x² - 4 x

=   - 26 x² + 29 x  - 14

© 2024 IDNLearn. All rights reserved.