Medium
If p(x) = 1x² + (0)x + (4), find p(-1).
Explanation
Explanation
Substitute x = -1 into p(x): p(-1) = 1(-1)² + (0)(-1) + (4) = 1 + 0 + 4 = 5.
PRO TIP
Re-check your working by substituting the answer back into the original question.