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13albrad
06.07.2019 •
Mathematics
The product of two natural numbers, one of which is greater than the other by 6, is 187. find these numbers.
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Ответ:
A quadratic equation refers to an equation that can be rearranged into standard form
.
Quadratic equation formed for the given question will be:
The answer obtained by solving the equation will be :
and
.
How to form quadratic equation?Let the two numbers be x and y.
Given:
Product of x and y is 187
Therefore,
... (1)
And difference between x and y is 6
Therefore,
... (2)
On substituting the value of y in equation 1 we get:
![\begin{aligned}x(x+6) &= 187\\x^2 + 6x &= 187\\x^2 + 6x - 187 &= 0\end{aligned}](/tpl/images/0057/0139/00ac2.png)
How to solve quadratic equation?A quadratic equation can be solved by different methods such as factoring, formula method, etc.
Here we will be using formula to solve the equation
.
Formula for solving quadratic equation:for the given equation, a = 1, b = 6 and c = -187
Putting the values of a, b and c in the formula we get:
Since, natural numbers cannot be negative, we will solve taking the addition sign.
Therefore, as per equation 2
Hence, the natural numbers will be 11 and 17.
Learn more about quadratic equations here:
link
Ответ:
11,17
Step-by-step explanation:
First method:
factor 187 into 11*17, both of which are natural numbers, and difference is 6, so satisfies conditions for the answers.
Second method:
Product and difference: xy=p, x-y=6, half the difference is 3.
An approximation for the average between x and y can be found by taking the square root of the product p = 187
sqrt(187)=13.7, so we can try (14-3)(14+3) = 11*17=187.
Note: since sqrt(187) is always less than x*y, we try the next greater natural number (14) to start.
Ответ: