👤

Sagot :

bonjour

C = (2b – 4)(3b – 7)

   = 2bx3b + 2bx(-7) - 4x3b - 4x(-7)

   = 6b² - 14b - 12b + 28

   = 6b² - 26b + 28

D = (3b − 5)(−3b – 5)

    = -9b² +25

Bonjour,

C = (2b – 4)(3b – 7)

6b² -14b  -12b +28

= 6b² -26b +28

D = (3b − 5)(−3b – 5)

= -9b²  -15b +15b +25

= -9b²  +25

© 2024 IDNLearn. All rights reserved.