Question 25133
Solve:
{{{10x^2 - 2x - 4 = 0}}} Factor a 2.
{{{2(5x^2 - x - 2) = 0}}} Use the quadratic formula:{{{x=(-b+-sqrt(b^2-4ac)/2a)}}}
{{{x=(-(-1)+-sqrt((-1)^2-4(5)(-2))/2(5))}}}
{{{x=(1+-sqrt(1-(-40))/10)}}}
{{{x=(1+-sqrt(41))/10}}}

Solution:
{{{x = (1+sqrt(41))/10}}}
{{{x = (1-sqrt(41))/10}}}