136000/85
(81/16)^(-3)/4*(25/9)^-3/2/ (5/2)^-3
xยฒ-2x-4=0
๐๐๐๐ รท ๐๐ ๐๐ ๐๐
27x4
$\frac{3x}{3-x}$ + $\frac{9x}{x-3}$ =x
f(2^x-3)=4^-2^x+1
f(0) = ?
. ๐๐๐ ร ๐๐ โ ๐๐๐ + ๐๐๐๐ รท ๐๐๐
(PA~Q) โ R
what is the missing number: 8, 13, 10, 18, , 23