I need serious help on these 3 questions> its for an assignment- level 3 engineering maths--it would be very appreciated if anyone can help

What good manners Billy - we really appreciate that.    

  (I gave you thumbs up just to help get you started )

If you give CPhill thumbs up then you will give him 5 points.  He will like that too :)

a)     ³√b  = b^(1/3) ....so we have

b^(1/3) / b^(1/6)   ....remember  a^m / a^n = a^(m-n)...so we have  b^(1/3 - 1/6)  = b^(1/6)

b)  (x^3)^2 * y^(-2) / xy   =    x^6 / [x y^2 *y] = x^5 / y^3      .....remember a^(-n)  = 1 / a^(n)....also (a^m)^n  = a^(m x n)

c) a^3 x b^4 x a ^4 x a^3  = a^10 x b^4  ...  the rule is a^n * a^m = a^(n+m)

thanks bro u legend!