Question: The function f ( x ) = A x 3 + B x 2 + C has a horizontal tangent line at the point (

The function f(x)=Ax3+Bx2+C has a horizontal tangent line at the point (-1,f(-1)). The slope of the normal line at (1,f(1)) is -110. Find the value of B.
The function f ( x ) = A x 3 + B x 2 + C has a

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