~(a->(b∧c))
2053471.9058
2061758.3306
2063172.8585
evaluate x²-50+60+90-40
evaluate x²+25-60+60
3/4*2/4
×/4××=20000
5x-4+ $\frac{42}{x+2}$ . x+2
1/2+3/8+-1/4
( 2+$\sqrt{6}$)/(2- $\sqrt{6}$ )
