What is the romantic mathematical formula in the history of mathematics?

The romantic mathematical formula in the history of mathematics is as follows:

1, X2+(y+3√X2)2= 1, draw a function image, which is a heart.

2.r=a( 1-cosθ) or r = a (1+cos θ) (a > 0) Horizontal direction, centerline.

Equation confession

128√e980？ Erase the upper part of the formula, or block the view of "I love you", which means I love you.

Mathematical formula love story

1, I love you? 100×6-250-30+200? =600-250-30+200? =350-30+200? =520。

I love you all my life? (52.8×5-3.9343)÷0.5? =(264-3.9343)÷0.5? =250.0657÷0.5? =520. 13 14 。

3. You are my favorite? ( 150×2×4)+8 18+222? = 1200+8 18+222? =20 18+222? =2240? .

4. Stay with you for life? (50×4)×40+ 13? =200×40+ 13? =8000+ 13? =80 13? .