n^2-n-15500=0
(2x-1)(3x+2)
how does the prove of induction works
0.25 dividebdivideddividedby368
90-56 divided by 8
4^×+1 +2^×+1=996
6x^2 + x - 2
$$\sum_{x=1}^{15}{430+5x}$$
4x(x+3)-(2x-3)