svp aider moi c'est la suite d'ex
4-développer et réduire:
A=-2+(x-1) (x-3)+4x
B=3t+(1-t) (2+t)-8
C=a²+(a²+2) a²-3a²+1
D = (y/2 - 1)(1/2 - y) + 1/2 (3/2y + 1)
merci d'avence
4-développer et réduire:
A=-2+(x-1) (x-3)+4x
B=3t+(1-t) (2+t)-8
C=a²+(a²+2) a²-3a²+1
D = (y/2 - 1)(1/2 - y) + 1/2 (3/2y + 1)
merci d'avence
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Verified answer
Réponse:
A=-2+(x-1)(x-3)+4x
= -2+x²-3x-x+3+4x
=-x²+1
B=3t+(1-t)(2+t)-8
=3t+2+t-2t-t²-8
= -t²+t-6
C=a²+(a²+2)a²-3a²+1
=a²+a⁴+2a²-3a²+1
=a⁴+1
D=(y/2-1)(1/2-y)+1/2(3/2y+1)
=y/4-y²/2-1/2+y+3/4y+1/2
= -y²/2+2y