f(x)=6x+4F(x)=3x^2+4x+CF(-2)=3*4-8+C=512-8+C=54+C=5C=1F(x)=3x^2+4x+13x^2+4x+1=0x=-1 или x=-1/3Ответ: -1; -1/3
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f(x)=6x+4
F(x)=3x^2+4x+C
F(-2)=3*4-8+C=5
12-8+C=5
4+C=5
C=1
F(x)=3x^2+4x+1
3x^2+4x+1=0
x=-1 или x=-1/3
Ответ: -1; -1/3