SOLUTION: Please help me to solve this equation: Use the Quadratic Formula to solve the equation. 5x^2-5x-10=0

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Question 475012: Please help me to solve this equation:
Use the Quadratic Formula to solve the equation.
5x^2-5x-10=0
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
5x%5E2-5x-10=0
5%28x%5E2-x-2%29
a= 1 b= -1 c= -2

b^2-4ac= 1 - 8
b^2-4ac= 9
sqrt%28%099%09%29= 3
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=( 1 + 3 )/ 2
x1= 2
x2=( 1 -3 ) / 2
x2= -1

x = 2 OR -1
m.ananth@hotmail.ca