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Mathematics 19 Online
OpenStudy (anonymous):

What are the possible values of x in 8x2 + 4x = -1

OpenStudy (johnweldon1993):

If you add 1 to both sides to set this equation to 0...you'll see you have a quadratic \[8x^2 + 4x + 1 = 0\] Have you used the quadratic formula before?

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