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Mathematics 16 Online
OpenStudy (anonymous):

i need your help in solving this problem 2x^2 +7x +6=0 what is the minimum and maximum this problems is new to me

OpenStudy (anonymous):

This parabola is concave up, which means it opens upward. We know this because the coefficient of the x^2 term is positive. So, since it opens upward, it must have a minimum, but no maximum. As for how to find the minimum, that really depends on your level in math. In calculus, we would take the derivative equal to 0. If you're in algebra or a similar level class you've probably learned that the vertex is located at \[x=-b/(2a)\]where a is the coefficient of the x^2 term and b is the coefficient of the x term.

OpenStudy (anonymous):

yes you are correct i am in algebra and we are learning about vertex

OpenStudy (anonymous):

Okay, so for any quadratic you can find the x coordinate of the vertex by the expression (-b)/(2a). So in this case our b value is 7 and our a value is 2, so plug those in to find the x coordinate.

OpenStudy (anonymous):

that is the problem i am having I do not know how to work the problem

OpenStudy (anonymous):

Ok. Simply plug in the a and b values into this equation: (-b)/(2a). In our equation, a=2 and b=7

OpenStudy (anonymous):

so you will have x = -b/a?

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