200-1+199
R+R*R=30
R=?
n(1) + n(0) x 20.656356 =
2:3::7:x
2:3::7:
45*3.14
${9}^{2} \cdot 3.14$ - 6^2*3.14
If 1, ω and ω are the cube roots of unity, then
(a + b + c)(a + bω + cω)(a + bω + cω) =
x^2-4x/4x
