Question

The sum of two numbers is four and their product is ten. If one number is x, write an expression for the other number ​

Answer 1

4y - y^2 = 10

Explanation:

Let x and y be the two numbers

x+y = 4

xy = 10

Taking the first equation and solving for x

x = 4-y

Substituting this into the second equation

(4-y) *y = 10

4y - y^2 = 10