SOLUTION: Use the formula x = -b+- square root b^2-4ac to solve the equation 3x^2 = 2x+5

Algebra ->  Radicals -> SOLUTION: Use the formula x = -b+- square root b^2-4ac to solve the equation 3x^2 = 2x+5      Log On


   

Question 807441: Use the formula x = -b+- square root b^2-4ac to solve the equation 3x^2 = 2x+5
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
3x^2-2x-5=0
Find the roots of the equation by quadratic formula
,b=
a= 3 -2 c -5
-
b^2-4ac= 16 600
b^2-4ac= 616
sqrt%28%09616%09%29= 24.82
x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29
x1=%28-b%2Bsqrt%28b%5E2-4ac%29%29%2F%282a%29 +
x1=( 4 24.82 )/ 6
x1= 4.8
x2=( 4 ) / 6
x2= -3.470