Lol I don’t know how to do these could you guys help me?

Simplify the expression. 3x^8 • 6x^-8

Rewrite the expression with no negative exponents.
4x^-3 y^5

Simplify the expression.
10x^9/2x^4

Simplify the expression
(4x^3)^2

Simplify the expression
(X^2 y^4 z)^3 • (xy^3 z^5)^8

Simplify the expression
(Xy)^5 • (2x)^3

Simplify the expression
X^4 • x^9/x^10

Simplify the expression. Leave no negative exponents in your answer.
X^2 y^12/x^3 y^5 • x^3 y/x^4 y^2

Simplify the expression. Leave no negative exponents in your answer.
(X^6 y^5/x^2 y^8)^4