Question

What can be determined by looking at the polynomial f(x)=(x+3)(x−7)?

Answer 1

Answer:

A quadratic equation

Step-by-step explanation:

$f(x) = (x + 3)(x - 7) \\ f(x) = {x}^{2} - 7x + 3x - 21 \\ f(x) = {x}^{2} - 4x - 21$