The answer is $f(-1)=10$.
Work Step by Step
The given function is $f(x)=x^3+2x^2-5x+4$ Plug $x=-1$ into the function. $f(-1)=(-1)^3+2(-1)^2-5(-1)+4$ Simplify. $f(-1)=-1+2+5+4$ $f(-1)=10$.
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