Multiplying Radicals with Variables

What is the product of $$\sqrt[]{x^4} \cdot \sqrt[]{x^5}$$ ?

What is the product of $$\sqrt[]{x^2} \cdot \sqrt[]{x^8}$$ ?

What is the product of $$\sqrt[]{4x^2} \cdot \sqrt[]{6x^6}$$ ?

What is the product of $$\sqrt[]{4x^7} \cdot \sqrt[]{6x^2}$$ ?

What is the product of $$\sqrt[]{5x^{ }} \cdot \sqrt[]{10x^5}$$ ?

Define a radical expression.

What is the square root of a variable raised to an even power?

What is the square root of a variable raised to an odd power?

What is the product property of square roots?

How do you simplify $$\sqrt{a^2b}$$ ?