Hello everyone. This question is apparently unsolvable:

If $\displaystyle x = 3$ or $\displaystyle -4$ are the solutions of the equation $\displaystyle x^2+ax+b=0$, find the values of $\displaystyle a$ and $\displaystyle b$.

The keyword in this irksome question would be the word 'or'. So it denotes that that this involves quadratic formulas.

Can anyone give me a clue so that I may make a breakthrough in understanding this problem? Thank you so much!