What is the area of the rectangle whose length is (x + 5) and width (x-5)​

Step-by-step explanation:

The area of a rectangle is the product of length and width.

The length is (x+5) and the width is (x-5).

We have two binominals, so we can multiply using FOIL: First, Outside, Inside, Last.

Combine the like terms: -5x and 5x. They cancel each other out.

The area of the rectangle is x²-25

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5