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Without an equality sign it can't be considered to be an equation
9x2+6x-7 = 0 Using the quadratic equation formula:- x = 0.6094757082 or x = -1.276142375
Expression. Equations have equals signs.
-6x^2 - 78x - 252 Improved answer: -6x+6x+7 When simplified = 7
Yes.