Answer:

1. The cube of the sum of a and b, minus 13.

2. P multiplied by 4 is equal to s.

3. Three times the product of a and b, divided by twice the difference of a and b.

4. C is equal to the square root of the sum of the squares of a and b.

5. Two times the difference between x and y, plus one-third of the sum of x and y.

Answer:

Here are the English translations of the mathematical expressions:

• "(a+b)³-13" translates to "The cube of the sum of 'a' and 'b' minus 13."

• "P• = 4s" translates to "The product 'P' is equal to 4 times 's.'"

• "3ab / 2(a-b)" translates to "Three times 'a' times 'b' divided by two times the difference of 'a' and 'b.'"

• "C = √(a² + b²)" translates to "The value of 'C' is equal to the square root of the sum of the squares of 'a' and 'b.'"

• "2(x − y) + ⅓ (x+y)" translates to "Two times the difference of 'x' and 'y' added to one-third of the sum of 'x' and 'y.