Question 1171961
{{{x^2+3x=4}}}

{{{x^2+3x+(3/2)^2=4+(3/2)^2}}}

{{{(x+3/2)^2=4+9/4}}}

{{{(x+3/2)^2=16/4+9/4}}}

{{{(x+3/2)^2=25/4}}}

{{{x+3/2=0+- 5/2}}}

{{{x=-3/2+- 5/2}}}


x=-4  or  x=1

.