fndth qadatco p
x*(x+1)*(x+2)*(x+3)*(x+4)(x+5)(x+6)(x+7)(x+8)(x+9)=31.6227766
x*(x+1)*(x+2)*(x+3)*(x+4)(x+5)(x+6)(x+7)(x+8)(x+9)
tan(π/4+1/2 cos^(-1)x )+tan(π/4-1/2 cos^(-1)x )
(7x-4y-3z)+(-2y+6z-4z)
50+6
a²+b²
t²+15
139/12
12+45
