x²+5x-2=0 quadratic equations
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-b±√(b²-4ac)
—---------------=x
2a
-5±√25+8
---------------=x
2
so x =-5+√33/2,-5-√33/2
—---------------=x
2a
-5±√25+8
---------------=x
2
so x =-5+√33/2,-5-√33/2
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