Evaluate: 4x² - 10xy - 8y² for X = -3

question 173

Essay

Evaluate: 4x² - 10xy - 8y² for x = -3, y = 5

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Definitions:

Groundwater

Water that exists beneath the Earth's surface in soil pore spaces and in the fractures of rock formations.

Sinking

The process where land or objects gradually go down or submerge in water or another medium.

Ground

The solid surface of the Earth, or a reference point in electrical engineering for a return path for electric current.

Earth's Water

The total amount of water found on, under, and above the surface of the Earth, including oceans, ice caps, groundwater, lakes, and atmospheric water vapor.