SOLUTION: Sollve using the quadratic formula. {{{x^2 = 7x + 6}}} My answer was x={{{(2sqrt(73)+7)/2}}},x={{{(-2sqrt(73)+7)/2}}}. Is this correct? Thanks so much for your time.

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Sollve using the quadratic formula. {{{x^2 = 7x + 6}}} My answer was x={{{(2sqrt(73)+7)/2}}},x={{{(-2sqrt(73)+7)/2}}}. Is this correct? Thanks so much for your time.      Log On


   

Question 75981: Sollve using the quadratic formula. x%5E2+=+7x+%2B+6
My answer was x=%282sqrt%2873%29%2B7%29%2F2,x=%28-2sqrt%2873%29%2B7%29%2F2. Is this correct? Thanks so much for your time.
Answer by tutorcecilia(2152) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2+=+7x+%2B+6
x%5E2+-+7x+-+6=0 [set the equation equal to zero by subtraction 7x and 6 from both sides]
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ [plug-in the values]
x+=+%28-%28-7%29+%2B-+sqrt%28+%28-7%29%5E2-4%2A1%2A-6+%29%29%2F%282%2A1%29+ [simplify]
x+=+%28%287%29+%2B-+sqrt%28+49%2B24+%29%29%2F%282%29+
x+=+%28%287%29+%2B-+sqrt%28+73+%29%29%2F%282%29%29+
.
x=7.772 or x=-0.772