Question

Evaluate the expression for the given value of the variable(s).

-x2 - 4x; x = –3

Answer 1

Answer:

  3

Step-by-step explanation:

There are a significant number of minus signs here. We can simplify it a bit by factoring out -x:

  = -x(x +4)

When we substitute x = -3, we get ...

  = -(-3)(-3 +4)

  = 3(1)

  = 3