3x^3-11x^2-19x-5
solve:
4 to the power of -5+x=1024
(6x^2y^3)/(9xy^4)
xy+~xz+yz
63 – 74 = ?
2-5(mod8)
-2qXrX9
solve the equation
9z + 5 (2-2z)
16-10:(6-1)-3