Question

2 lengths of a rectangle are shown. (N-5) (n+5) what is the area of the rectangle?

Answer 1

n^2 - 25

Explanation:

These dimensions are the difference and the sum of two quantities.

Recall that (a - b)(a + b) = a^2 - b^2 (no middle term).

The area of this rectangle is A = (n - 5)(n + 5) = n^2 - 25