Find two consecutive natural numbers whose product is 132.
May 18, 2021 | education
| Let’s say one of these numbers is x.
By the condition of the problem, the numbers are natural and sequential, so the second number will be equal to x + 1.
We get the following equation:
x * (x + 1) = 132,
x ^ 2 + x = 132,
x ^ 2 + x – 132 = 0.
Let’s solve this quadratic equation. Let’s find the discriminant:
D = 1 ^ 2 – 4 * 1 * (-132),
D = 1 + 528,
D = 529, therefore √529 = 23.
Thus, we get:
x = (- 1 – 23) / 2 = -12 and x = (-1 + 23) / 2 = 11.
By condition, the numbers are natural, which means they will look like:
11 and 11 + 1 = 12.
Answer: 11 and 12.
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