SOLUTION: I am confused on this one. Thanks for the help Solve using the quadratic formula 5x^2+x=3 Thanks

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: I am confused on this one. Thanks for the help Solve using the quadratic formula 5x^2+x=3 Thanks      Log On


   

Question 89805: I am confused on this one. Thanks for the help
Solve using the quadratic formula
5x^2+x=3
Thanks
Answer by tutorcecilia(2152) About Me  (Show Source):
You can put this solution on YOUR website!
5x^2+x=3
5x^2+x-3=0 [ax+by+c=0]
.
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ [plug-in the values and solve for x]
.
x+=+%28-%281%29+%2B-+sqrt%28+%281%29%5E2-%284%29%285%29%28-3%29+%29%29%2F%282%2A5%29+
.
x+=+%28-1+%2B-+sqrt%28+1-%28-60%29+%29%29%2F%2810%29+%29
.
x+=+%28%28-1+%2B-+sqrt%28+1%2B60%29+%29%29%2F%2810%29%29+
.
x+=+%28%28-1+%2B-+sqrt%28+61%29+%29%29%2F%2810%29%29+
.
x+=+%28%28-1+%2B+sqrt%28+61%29+%29%29%2F%2810%29%29+ = 0.681
x+=+%28%28-1+-+sqrt%28+61%29+%29%29%2F%2810%29+%29 = -0.881