an expression of the terms n[x]
2(89+700)
a+b
-16/4-30/(-5)
3/4+7/10(2/5-(-i/2))
89.57+64+2.36
63+4.8+95.6
-15-(-8)
∫dx/x^(4)+a^(4) =π/2√2a
20 minus 50
$\sqrt{1200}$