Question 1510
25x^2+4 = -20x
First add 20x to both sides
25x^2+20x+4 = 0
Now use the quradratic formula
{{{x=(-20+-sqrt(20^2-4(25)(4)))/(2(25))}}}
{{{x=(-20+-sqrt(0))/50}}}
{{{x=-20/50}}}
{{{x=-2/5}}}