9k +5k
2(w-1)
factorize 3xysquared+9y
1/(x+1) + 1/(x-1)
1/x+1 + 1/x-1
y=4/x^2
Let, the average speed is x km/. The time taken by the motorist =160/x hr
7+2x=15 find x
$x^{3/2}$ = $10^{8}$
factorize 18tcubed+8t
