maths
posted by courtney .
Simplify the expression.
1. 3y(6y+2)(y)
2. (7x+^2)(x)+x^2
3. 3y/2 divide by 2/7
4. x/4 divide by 6/x
I couldn't do any of these. Please explain..
Thanks!

Number two should look like this:
(7x+x^2)(x)+x^2
Also, I gave it another try and this is what I got (only for number 1 and 2):
1. y6y^2
2. 8x^2+(x^3)
Please check and help out with #3 and #4.. :)