Question 1058046
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If x=3 or -4 are the solutions of the equation x^2+ax+b=0. Find the value of a and b. 
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<pre>
Then a = -(3+(-4)) = -(-1) = 1

and

b = 3*(-4) = -12.
</pre>

See the lesson

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/quadratic/lessons/Solving-quadratic-equations-without-quadratic-formula.lesson>https://www.algebra.com/algebra/homework/quadratic/lessons/Solving-quadratic-equations-without-quadratic-formula.lesson</A>

in this site.


Vieta's formulas.