f(x) = -2x2 + 3x + 1 What is f(4) ?

Answer 1

Assuming you have not been able to put a square and wrote a 2 after x. Please clarify.

f(x) = -2x2 + 3x + 1

putting the 4 in place of x, we get:

f(4) = -2(4)² + 3(4) + 1

f(4) = -32 + 12 +1

f(4) = -19