1. Show all work as you perform the indicated operations and simplify the result:
(2x6y5)3(-7x5y4)
2. Show all work as you perform the indicated operations and simplify the result. Write the answer with positive exponents only.
24x-9y12 / 63x-7y
3. Show all work as you perform the indicated operations and simplify the result:
5x3-3x2+2x)+(4x2-7x+3)-(8x3-7x2+12)
4. Show all work as you multiply the polynomials and simplify the result:
(8x-7)(3x2-7x+5)