If I wrote $\displaystyle ax^2+bx+c=0$ --> x= d,e for example, then am I right in thinking that all this says is that d and e are the only possible solutions and that I would need 'iff' to justify that these are the solutions?

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- Nov 15th 2011, 12:31 AMboromirjustifying solutions of an equation
If I wrote $\displaystyle ax^2+bx+c=0$ --> x= d,e for example, then am I right in thinking that all this says is that d and e are the only possible solutions and that I would need 'iff' to justify that these are the solutions?

- Nov 15th 2011, 01:16 AMmr fantasticRe: justifying solutions of an equation
- Nov 15th 2011, 04:53 AMHallsofIvyRe: justifying solutions of an equation
Although, if I were your teacher, I would expect more than just "$\displaystyle ax^2+ bx+ c= 0---> x= d, e"$ to indicate that d and e

**are**meant to be the solutions. If you want to really**shock**your teacher, try writing full sentences: "x= d and x= e are the solutions to the equation $\displaystyle ax^2+ bx+ c= 0$"! - Nov 15th 2011, 06:32 AMboromirRe: justifying solutions of an equation
- Nov 15th 2011, 01:22 PMmr fantasticRe: justifying solutions of an equation