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2014-11-11T22:43:26+02:00
(x+2)^2=x^2+2*x*2+2^2=x^2+4x+4
-3(x+2)=-3(x^2+4x+4)=-3x^2-12x-12
2014-11-11T22:44:19+02:00
F(x)= -3(x²+4)= -3x²-12
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