Question

1. Find the product of (n - 5) and (n + 5).

Answer 1

n² - 25

Step-by-step explanation:

(n - 5)(n + 5)

Each term in the second factor is multiplied by each term in the first factor, that is

n(n + 5) - 5(n + 5) ← distribute parenthesis

= n² + 5n - 5n - 25 ← collect like terms

= n² - 25

Answer 2

n²-25

Step-by-step explanation:

Expand the polynomial using the FOIL method. (A handy way to remember how to multiply two binomials. It stands for "First, Outer, Inner, Last")