Given the square of X + 4x + 1 = 0, find the value of x2 + X to the negative power

Given the square of X + 4x + 1 = 0, find the value of x2 + X to the negative power

x^2+4x+1=0
(x+2)^2=3
x=-2±√3
X ^ 2 + 1 / x = (- 2 + √ 3) ^ 2 + 1 / (- 2 + √ 3) = 7-4 √ 3-2 - √ 3 = 5-5 √ 3, or
x^2+1/x=(-2-√3)^2+1/(-2-√3)=7+4√3-2+√3=5+5√3

Given √ (x2-4) + x2 + 4x + 4 = 0, find the value of X (2 table Square)

√(x²-4)+(x+2)²=0
If one is greater than 0, the other is less than 0
So both are equal to zero
So x & sup2; - 4 = 0
x+2=0
So x = - 2

0.085 square meters = () square decimeters

One square meter = one hundred square decimeters
Tip: the rate of advance between area units is 100
0.85x100 = 8.5m2

22 square decimeter = () meter 0.22 square decimeter = () square meter

0.22
zero point zero zero two two