The product of two consecutive positive integers is 5 more than their sum. Find the integers.
Solution:
Let the two consecutive positive integers be x and (x + 1).
We have to find the integers.
Product of integers = 5 + sum of the integers.
x(x + 1) = 5 + x + x + 1
x2 + x = 5 + 2x + 1
x2 + x - 2x = 6
x2 - x - 6 = 0
x2 - 3x + 2x - 6 = 0
x(x - 3) + 2(x - 3) = 0
(x + 2)(x - 3) = 0
So, x + 2 = 0
x = -2
x - 3 = 0
x = 3
Given, the integers are positive.
So, x = 3
x + 1 = 3 + 1 = 4
Therefore, the integers are 3 and 4.
The product of two consecutive positive integers is 5 more than their sum. Find the integers.
Summary:
The product of two consecutive positive integers is 5 more than their sum. The integers are 3 and 4.
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