Simple 4-quadrant heart curve

Mathematically simple heart shape. Some have come up with advanced and complex algebraic or trigonometric equations to approximate the heart/love symbol. This image instead uses two simple perpendicular straight lines and two partial circular arcs. Mathematically, x and y are related by the following four equations (one applying in each quadrant):

Ist quadrant (x≥0,y≥0)

(x–3.3030615433)²+(y–2.6969384567)²=14.5469540784

IInd quadrant (x≤0,y≥0)

(x+3.3030615433)²+(y–2.6969384567)²=14.5469540784

IIIrd quadrant (x≤0,y≤0)

x+y= –6

IVth quadrant (x≥0,y≤0)

y–x= –6

Where the approximate constants in the first two equations have the following exact values:

14.5469540784=144/(√2+√3)²

3.3030615433=(√108)/(√2+√3)

2.6969384567=6–((√108)/(√2+√3))

(The first of these is the square of the radius of the circular arcs.)

There's a 90° corner at coordinate point (0,–6) and a 60° corner at (0,4.6039619279).

Where 4.6039619279=6(1–((√3–1)/(√2+√3)))