2,250 x 2+38-17.8686 = 520.1314-I love you all my life.

3. [(n+52.8) × 5–3.9343] ÷ 0.5-/kloc-0 × n = 520.1314 (n = any number)-I love you all my life.

4.r=a( 1-sinθ), r=a( 1-cosθ) or r = a (1+cos θ) (a >: 0) in the horizontal direction. Heart line.

5. 128√e986 Write it on the blackboard and erase half of it, which means I love you.

6、5x^2-6xy+5y^2= 128

7. I am singing and you are singing. I don't want sum of squares, I want tan. The relationship between the two is infinite and immeasurable.