Solve the Equation by the Zero-Factor Property $$x ^ { 2 } + 7 x - 18 = 0$$

question 3

Multiple Choice

Solve the equation by the zero-factor property.
- $$x ^ { 2 } + 7 x - 18 = 0$$

• A) \(\{ - 2,9 \}\)
• B) \(\{ 2,9 \}\)
• C) \(\{ - 9 , - 2 \}\)
• D) \(\{ - 9,2 \}\)

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Definitions:

Silicate Minerals

Minerals that contain silicon and oxygen, and possibly other elements, forming the largest and most important class of rock-forming minerals.

Earth's Crust

The outermost layer of Earth, comprising both continental and oceanic crust, and forming the solid surface of the planet.

Earth's Mantle

The thick layer of rock between the Earth's crust and core, making up about 84% of Earth's volume.

Atomic Weight

The average mass of atoms of an element, calculated using the relative abundance of isotopes in a naturally-occurring element.