# SOLUTION: Solve by using the quadratic formula. x^2 = –5x + 8 Is this right? My answer: 7+-&#8730;61/2 The middle between the 7 and &#8730;61 is suppose to be a plus sign over a minus

Algebra ->  Algebra  -> Expressions-with-variables -> SOLUTION: Solve by using the quadratic formula. x^2 = –5x + 8 Is this right? My answer: 7+-&#8730;61/2 The middle between the 7 and &#8730;61 is suppose to be a plus sign over a minus      Log On

 Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help! Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!

 Algebra: Expressions involving variables, substitution Solvers Lessons Answers archive Quiz In Depth

 Click here to see ALL problems on Expressions-with-variables Question 83676: Solve by using the quadratic formula. x^2 = –5x + 8 Is this right? My answer: 7+-√61/2 The middle between the 7 and √61 is suppose to be a plus sign over a minus sign. Answer by checkley75(3666)   (Show Source): You can put this solution on YOUR website!X^2=-5X+8 X^2+5X-8=0 USING THE QUADRATIC EQUATION WE GET: X=(-5+-SQRT[5^2-4*1*-8])/2*1 X=(-5+-SQRT[25+32])/2 X=(-5+-SQRT57)/2 X=(-5+-7.55)/2 X=(-5+7.55)/2 X=2.55/2 X=1.275 ANSWER. X=(-5-7.55)/2 X=-12.55/2 X=-6.275 ANSWER.