SOLUTION: The sum of two numbers is 20 and their product is 15. find the sum of their cubes?
Algebra.Com
Question 938052: The sum of two numbers is 20 and their product is 15. find the sum of their cubes?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
The sum of two numbers is 20: numbers x and 20-x
and their product is 15.
x(20-x) = 15
20x - x^2 = 15
x^2 - 20x + 15 = 0 Format ax^2+ bx + c
x = 10 ± √85
(10+√85)^3 + (10-√85)^3 Use Calculator
RELATED QUESTIONS
The sum ot two numbers is 6 and their product is 7. What is the sum of their... (answered by richard1234)
The sum of two numbers is 20. Find the numbers and their product if their product is a... (answered by math_helper)
if the sum of two numbers is 8 and the sum of their cubes is 20, what is the sum of their (answered by Alan3354)
IF THE SUM OF TWO NUMBERS IS 7 AND THE SUM OF THEIR CUBES IS 133 FIND THE SUM OF THEIR... (answered by Alan3354)
The sum of two numbers is 7, twice their product gives 20. Find the... (answered by ikleyn,Alan3354)
The sum of the positive integers is 8 and the sum of their cubes is 152. what is the... (answered by stanbon)
The sum of two numbers is 25 and their product is 252. Find their... (answered by Fombitz)
The sum of two numbers A and B is 3. The sum of their cubes is 36, What is the sum of... (answered by RAY100)
The sum of two numbers is thirteen and their product is 21. Find the two... (answered by checkley79)