Simplify
- $\left( 12 x ^ { 2 } y - 6 x y + 9 \right) + \left( - 11 x ^ { 2 } y + 8 x y - 5 \right)$

question 52

Multiple Choice

Simplify.
- $\left( 12 x ^ { 2 } y - 6 x y + 9 \right) + \left( - 11 x ^ { 2 } y + 8 x y - 5 \right)$

• A) \(- x ^ { 2 } y - 14 x y + 14\)
• B) \(23 x ^ { 2 } y + 14 x y + 14\)
• C) \(x ^ { 2 } y + 2 x y + 4\)
• D) \(2 x ^ { 3 } y ^ { 2 } + 4\)

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Definitions:

Blocks Variation

The variation among experimental units that is accounted for by grouping them into blocks based on certain characteristics to reduce confounding effects.

Automobile-To-Automobile Variability

Variation in characteristics or properties observed between different automobiles.

Miles Per Gallon

A measure of fuel efficiency in vehicles, representing the number of miles a vehicle can travel per gallon of fuel.

Degrees of Freedom

The number of independent pieces of information available to estimate another piece of information or the parameters of a model.