Concentration of P using the Quadratic Formula

[504909207]

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]

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]

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.