maths
posted by Shane .
Please help me simplify this and show full working out. (a) (2x^3 divide 3y^4)^2 multiply (x divide 3y)^2 (b) aa^1 divide a^2  1 (c) 3^a+2 times 9^2a+1 divide by 6^2 times 3^5a+3

maths 
Steve
(2x^3/3y^4)^2 * (x/3y)^2
4x^6/9y^8 * 9y^2/x^2
4x^4/y^6
(a  1/a) / (a^21)
((a^21)/a) / (a^21)
1/a
3^(a+2) 9^(2a+1) / 6^2 3^(5a+3)
3^(a+2) 3^(4a+2) / 2^2 3^2 3^(5a+3)
3^(5a+4) / 4*3^(5a+5)
1/12
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