Question

Expand and simplify (x+3)(x-4)

Answer 1

Explanation:

Use FOIL method.

F - First ; O - Outside ; I - inside ; L - last

(x + 3)(x - 4) = x*x + x*(-4) + 3*x + 3*(-4)

= x² - 4x + 3x - 12

= x² - x - 12