y=21
8(y-9)
3r-13<14
3^65 * 6^53 *9^5
−2 · 3� − 5 = � − 25, � = ?
y=12
18 + x to the 2nd power
prove that 3√2+√5 is irrational
2/7 into 7/5 $^{3x}$
2/7 into 7/5 $a^{3x}$
3/5 OF 1000
sqrt(x-1+2*sqrt(x-2))+sqrt(x+2+6*sqrt(x-2))=2