Eigenvalue wrote:x=[tex]\frac{-b \pmsqrt(b²-4ac) }{2a}[/tex]
2ax=-b[tex]\pm \sqrt{b²-4ac}[/tex]
(2ax+b)²=b²-4ac
4a²x²+4abx+b²=b²-4ac
4a²x²+4abx=-4ac
-ax²-bx=c
Double check:
Standard form is ax²+bx+c=0
c=-ax²-bx
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