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Sagot :

KAVITHA01

Réponse:

Bonjour,

exo 20

1)(x+3)²-4

(x+3-2)(x+3+2)

(x+1)(x+5)

2),(x+1)(x+5)=0

x=-1 or x=-5

exo:

Volume de solide

a³ - a³(π / 16) = a³ ( 1 - π/16)

car:

volume de cube est a³

Alors :

=π(a/4)²×a

=π ( a²/16) × a

= π ( a³ / 16)

= a³ (π / 16

= a³ ( 1 - π/16)

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