Montrer que B(x)= -(x-12) au carré +64
B(x) = -x au carré +24x-80

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Grade: Education Subject: mathematiques
Montrer que B(x)= -(x-12) au carré +64
B(x) = -x au carré +24x-80
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B=-(x-12)²+64=-(x²-24x+144)+64
B=-x²+24x-144+64
B=-x²+24x-80