K={x:2<=x<=90 x is a perfect square number} write down all elements in K
A, B, and C are to fight a three-cornered pistol duel. All know that A’s chance of hitting his target is 0.3, C’s is 0.5, and B ne...
x+a/x-b+d=c
1619130
24877384
22181400
3233792
6240012
2413357
100058009332995
179908157582924
89-95
50/x ; when x = 5
$\sqrt{\10%*(19286480/.025)}$/$20^{3}$/4000
2* $\sqrt{\x}$* $\sqrt{\2x}$
solve the simultaneous equations:
x^2 + 2y^2 = 11
y - 3x = 8
