Evaluate f(2). I am confused on what to do first

Question

Let f(x) = -14x⁴ + 8x³-3. Evaluate f(2)

Answer 1

This problem is asking you to evaluate (or solve) the function when x = 2. That means for you to substitute 2 into the function, use the correct order f operations, and solve for a final value of the function when x is 2.

f(x) = -14 x ⁴ + 8 x ³ - 3

f(2) = -14 *2⁴ + 8* 2³ - 3

Evaluate the powers first. Recall that 2⁴ is equal to 16 and 2³ is equal to 8:

f(2) = -14 * 16 + 8 * 8 - 3

Now multiply:

f(2) = -224 + 64 - 3

Then add or subtract in the order each operation appears from left to right:

f(2) = -160 -3

f(2) = -163