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Sagot :

Réponse :

Bonsoir

Explications étape par étape :

8+2(x-3)

8+(2*x)-(2*3)

8+2x-6

5(2x-6)

(5*2x)-(5*6)

10x-30

(-4-3x)2

-(2*4)-(2*3x)

10x-30

-3(4-x²)

-(3*4)+(3*x²)

-12+3x²

10x-3(4x-7)+9

10x-(3*4x)+(3*7)+9

10x-12x+21+9

-2x+30

(4x²-3)2+4x

(2*4x²)-(2*3)+4x

8x²-6+4x

bonsoir

ex 63

a)8+2*(x-3)

=8+2x-6

=2+2x

b)5x(2x-6)

=10x²-30x

c)(-4-3x)*2

=-8-6x

d)-3(4-x²)

=-12+3x²

e)10x-3(4x-7)+9

=10x-12x+21+9

=-2x+30

f)(4x²-3)*2+4x

=8x²-6+4x

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