diagonal of square is 10root 2 find its side
(0.13*0.3-0.003)/0.09
y'''+4y''+7y=0
4:50
ax+ay+cx+cy
y'+4y=0
2n!/(2(n+1))!
a^5-5a^4+10a^3-10a^2+5a=4.95
0.13*0.3-0.003/0.09
16x^4-1
