SOLUTION: solve 3x^2-7x-13=0find x-intercepts of f(x)=3x^2-7x-13 what are the solutions x= what are the x-intercepts (ordered pair

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: solve 3x^2-7x-13=0find x-intercepts of f(x)=3x^2-7x-13 what are the solutions x= what are the x-intercepts (ordered pair      Log On


   

Question 259996: solve 3x^2-7x-13=0find x-intercepts of f(x)=3x^2-7x-13 what are the solutions x= what are the x-intercepts (ordered pair
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
f(x)=3x^2-7x-13
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
x=(7+-sqrt[-7^2-4*3*-13])/2*3
x=(7+-sqrt49+156])/6
x=(7+-sqrt205)/6
x=(7+-14.32)/6
x=(7+14.32)/6
x=21.32/6
x=3.55 ans.
x=(7-14.32)/6
x=-7.32/6
x=-1.22 ans.
+graph%28+300%2C+200%2C+-6%2C+5%2C+-18%2C+10%2C+3x%5E2+-7x+-13%29+ (graph 300x200 pixels, x from -6 to 5, y from -18 to 10, 3x^2 -7x -13).
[The 2 x intercepts are (-1.22,0) & (3.55,0)]