(c-6)(c-5)
(9x)(9x/9+2x) ^{2/3} = 11.3298
5x+2y=13
x=9-2y
x+p=230 p-x=200
a^2x × a^y=a^3 , (a^3)^x ÷ a^4y=a^32
3/4 + 5/6
42n-2nnsquare-400
4²÷(3+1)-6
360- x/2
360/1 - x/2
