Question

Найти значение f(-2), если f(x)=x^3-2,5x^2-5

Answer 1

F(-2)=(-2)^3-2.5*(-2)2-5=-8-10-5=-23
Ответ:f(-2)=-23

Answer 2

F(-2)=(-2)^3-2.5×(-2)^2-5=-8-10-5=-23

Answer 3

To find the value of f(-2) for the given function f(x) = x^3 - 2.5x^2 - 5, simply substitute x with -2 in the function and evaluate:

f(-2) = (-2)^3 - 2.5(-2)^2 - 5

Now, calculate the value:

f(-2) = -8 - 2.5(4) - 5 f(-2) = -8 - 10 - 5 f(-2) = -18 - 5 f(-2) = -23

So, f(-2) = -23.