Question 483305
Rewrite the equation without parentheses:{{{16x^2+16x+4=0}}}

Divide both sides by 4: {{{4x^2+4x+1=0}}}. Now we solve the quadratic equation 

by factoring:{{{(2x+1)^2=0}}}<=>{{{2x+1=0}}}<=>{{{x=-1/2}}}.

The solution is x=-1/2.