Question 250976
sqrt(5x+29) = x+3
square both sides
5x+29=(x+3)^2
5x+29=x^2+6x+9
0=x^2+x-20
(x+5)(x-4)=0
x=-5
x=4
try them both in the original equation
sqrt(-25+29)=-5+3
sqrt(4)=-2

sqrt(5*4+29)=4+3
sqrt(49)=7