Simplify the Expression and Write the Answer Without Negative Exponents $\left( - 9 x ^ { 3 } y \right) \left( - 10 x ^ { 4 } y ^ { 6 } \right)$

question 51

Multiple Choice

Simplify the expression and write the answer without negative exponents.
- $\left( - 9 x ^ { 3 } y \right) \left( - 10 x ^ { 4 } y ^ { 6 } \right)$

• A) \(90 x ^ { 7 } y ^ { 7 }\)
• B) \(- 19 x ^ { 7 } y ^ { 6 }\)
• C) \(90 x ^ { 12 } y ^ { 6 }\)
• D) \(- 90 x ^ { 7 } y ^ { 6 }\)

---

Definitions:

Volcanic Glass

A shiny and smooth rock formed when molten lava cools rapidly without crystallizing.

Cooling

The process of losing heat, leading to a decrease in temperature; can refer to geologic formations solidifying from molten states.

Felsic Crystals

Refers to light-colored minerals rich in elements such as aluminum, potassium, silicon, and sodium, commonly found in continental crust rocks.

Mafic Crystals

Minerals rich in magnesium and iron that crystallize from basaltic magmas, typically dark in color.