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yvngtazz
28.08.2019 •
Mathematics
Y=5x+50 how would i slovenly it or graph it
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Ответ:
Ответ:
Option 3 - The given equation is a prime.
Step-by-step explanation:
Given : Quadratic equation![3x^2+x+7=0](/tpl/images/0258/7511/229bc.png)
To find : The factors of given equation.
Solution : To factories the given equation![3x^2+x+7=0](/tpl/images/0258/7511/229bc.png)
We will apply discriminant method
General form -![ax^2+bx+c=0](/tpl/images/0258/7511/2bf73.png)
Solution is![x=\frac{-b\pm\sqrt{D}}{2a}](/tpl/images/0258/7511/f202d.png)
Equation is![3x^2+x+7=0](/tpl/images/0258/7511/229bc.png)
where a=3 , b=1, c=7
Solution is![x=\frac{-b\pm\sqrt{D}}{2a}](/tpl/images/0258/7511/f202d.png)
Therefore, The factors are
So, 1,2,4 are not the options.
Now, check for prime
In a quadratic equation if
form a complete square then it is not prime and vice-versa.
In this question
does not make a perfect square.
Therefore, It is a prime.
Option 3 is correct.