Step-by-step explanation: (x+2)^2 =1 x^2 +4 +4x=1 x^2 +4x=1-4 x^2+4x=-3 x^2+4x+3=0 x^2+3x+1x+3=O (x^2+3x)+(1x+3)=0 x(x+3)+1(x+3)=0 (x+1) (x+3) =0 x=-1 x=-3 Reply
Step-by-step explanation:
(x+2)^2 =1
x^2 +4 +4x=1
x^2 +4x=1-4
x^2+4x=-3
x^2+4x+3=0
x^2+3x+1x+3=O
(x^2+3x)+(1x+3)=0
x(x+3)+1(x+3)=0
(x+1) (x+3) =0
x=-1
x=-3
Answer:
(x²+ 2×x×2 +1²)=1
[identity is used:-(a+b)²=a²+2ab+b²]
x²+4x+1-1=0
x²+4x=0