Question

(x+2)²=4
Me ajudem :c

Answer 1

$(x+2)^2=4\\ \\ \sqrt{(x+2)^2}=\pm\sqrt4\\ \\ x+2=\pm2\\ \\ x=-2\pm2\\ \\ x=0\ ou\ x=-4$

Answer 2

(x+2)^2=4

x^2 + 2^2+ 2*x*2= 4
x^2 +4 +4x= 4
x^2 +4x = 4-4
x^2 +4x=0

x(x+4)=0

x'=0
x''= -4

x+4=0
x= -4