Question 430407
(x+5)^2=4

=> x^2 + 10x + 25 = 4

=> x^2 + 10x + 21 = 0

=> x^2 + 7x  + 3x + 21 = 0

=> x(x+7) + 3(x +7) =0 

=> (x+3)(x+7) = 0

so, x = -3 or x= -7