Concentration of P using the Quadratic Formula

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504909207
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Joined: Wed Nov 15, 2017 3:02 am

Concentration of P using the Quadratic Formula

Postby 504909207 » Fri Jan 11, 2019 9:36 pm

Hello,

does anybody know why professor Lavelle said that one way to check today's problem was to plug the numbers in and see if it equals zero?

Samantha Ito 2E
Posts: 64
Joined: Fri Sep 28, 2018 12:29 am

Re: Concentration of P using the Quadratic Formula

Postby Samantha Ito 2E » Fri Jan 11, 2019 9:45 pm

I think he was talking about how you can plug in 1.59 for x in the equation x^2 + 1.80x - 5.40 and that equals zero.

Chem_Mod
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Re: Concentration of P using the Quadratic Formula

Postby Chem_Mod » Fri Jan 11, 2019 9:59 pm

A quadratic equation by definition is one which can be expressed as Ax^2+Bx+C=0. The solution to these equations are values of x which when plugged into the equation make the equation shown true, and thus equal to zero.


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