Question 79377
{{{x^2+4x+4=7}}}
{{{x^2+4x-3=0}}} Subtract 7 from both sides

Now use the quadratic formula to solve for x

*[invoke quadratic "x", 1, 4, -3 ]

So the solution is:

{{{x=-4.64575131106459}}} or {{{x=0.645751311064591}}}