D = -3x (-2x + 5)
E = -4(9 - 2x) - (9x - 7)
aidez moi svp​


Sagot :

Bonjour,

D = -3x (-2x + 5)

= 6x² -15x

E = -4(9 - 2x) - (9x - 7)

= -36 +8x -9x +7

=    -x -29