April 2019 1 131 Report
Pouvez vous me dire si c'est juste svp ? merci :)
2x²-4x+1
=2*(1-h)²-4*(1-h)+1
=2*(1-2h+h²)-4+4h+1
=2-4h+2h²)-3+4h
=2-4h+2h²-3+4h
-1+2h²


=2*(1+h)²-4*(1+h)+1
2*(1+2h+h²)-4-4h+1
2+4h+2h²-3-4h
-1+2h²
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