Answer:
4(10x) = 40x
Step-by-step explanation:
Assuming you meant that each side has 10x, and not the sum of each side is 10x. Since each side has 10x, and every square has equal sides of 4, we can utilize parenthesis.
4 = number of sides
10x = given length of each side
4(10x) = 40x
Same as saying 4 × 10x = 40x.
