Double distributivité Ex1 :
Développer.
A = (x + 4)(x + 2)
B = (4a + 5) (3 + 2a)
C = (4t+ 3)²
D = (3 + 2x²)(x + 1)
Développer.
A = (x + 4)(x + 2)
B = (4a + 5) (3 + 2a)
C = (4t+ 3)²
D = (3 + 2x²)(x + 1)
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Verified answer
Développer.
A = (x + 4)(x + 2)
= x² + 2 x + 4 x + 8
= x² + 6 x + 8
B = (4a + 5) (3 + 2a)
= 12 a + 8 a² + 15 + 10 a
= 8 a² + 22 a + 15
C = (4t+ 3)²
= 16 t² + 24 t + 9
D = (3 + 2x²)(x + 1)
= 3 x + 3 + 2 x ³ + 2 x²
= 2 x ³ + 2 x² + 3 x + 3