Bonsoir,
Développer:
A= 63x-27x²-21+9x
A= -27x²+72x-21
B= -8-12y+16y+24y²
B= 24y²+4y-8
C= -12a-18-20a²-30a
C= -20a²-42a-18
D= 40z²-56z+10z-14
D= 40z²-46z-14
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Bonsoir,
Développer:
A= 63x-27x²-21+9x
A= -27x²+72x-21
B= -8-12y+16y+24y²
B= 24y²+4y-8
C= -12a-18-20a²-30a
C= -20a²-42a-18
D= 40z²-56z+10z-14
D= 40z²-46z-14