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Bonjour pouvez m’aidez svp Développer chacune des expressions littérales suit
A=(9x-8)²
B=(7-5) x (7x+5)
C = (5x+4)²
Exercice 2
quiuntos
D (9x + 1) x (x - 9)
E-(10a-9)
P-(82+ ) × (82-²)

Sagot :

Bonjour,

A=(9x-8)²

= 81x² -144x +64

IR

B=(7-5) x (7x+5)

= 49x +35-35x -25

= 14x +10

C = (5x+4)²

= 25x² +40x +16

IR

Exercice 2

*

D (9x + 1) x (x - 9)

= 9x² -81x +x -9

= 9x² -80x -9

E -(10a-9)

= - 10a +9

P-(82+ ) × (82-²)

il manque quelque chose

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