x^2-13xy-30y^2
3/4 x 2/5
8638676.1081
8040807.0269
1816328.1350
2426800.812
16679483÷2162
21444785.538
18715712700
10154841624
43241076
77.34192
...
(1-3x)^4
3/4 x 2/4
x (x+3)=0
6p-10
-5x^2+16x = 6 /3871
let a and b be subgroup of a finite group g such that a is a subgroup of b show that [g : a] = [g : b][b :a]
