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Sagot :

7405

A= 3*x+3*2+x*x+x*2

A= 3x+6+x2+2x

A= x2+5x+6

B= 3x*2x+3x*2-2*2x-2*2

B= 6x2+6x-4x-4

B= 6x2+2x-4

C= -2*2y-2*(-1)+5y*2y+5y*(-1)

C= -4y+2+10y2-5y

C= 6y2-9y

D= 4*(-3)+4*4a+2a*(-3)+2a*4a

D= -12+16a-6a+8a2

D= 8a2+10a-12

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