Question

F(x)=одна втарая x в квадрате + 2x есле f(3);f(-1)

Answer 1

3×1/2=3/1×1/2=3/2 1×1/2=1/1×1/2=1/×

Answer 2

To evaluate the function $f(x) = x^2 + 2x$, we need to substitute the given values of $x$ into the function.

1. $f(3)$: To find $f(3)$, we replace $x$ with $3$ in the function: $f(3) = (3)^2 + 2(3) = 9 + 6 = 15$

2. $f(-1)$: To find $f(-1)$, we replace $x$ with $-1$ in the function: $f(-1) = (-1)^2 + 2(-1) = 1 - 2 = -1$

So, the values of the function at $x = 3$ and $x = -1$ are $f(3) = 15$ and $f(-1) = -1$, respectively.