Multiply, and Then Simplify If Possible $( \sqrt { z } - y ) ( \sqrt { z } + y )$

question 203

Multiple Choice

Multiply, and then simplify if possible. Assume all variables represent positive real numbers.
- $( \sqrt { z } - y ) ( \sqrt { z } + y )$

• A) \(z - y\)
• B) \(z - 2 y \sqrt { z } - y ^ { 2 }\)
• C) \(z + 2 y \sqrt { z } - y ^ { 2 }\)
• D) \(z - y ^ { 2 }\)

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Definitions:

Net Operating Income

A profitability metric that measures the amount of income generated from a company's operational activities before taxation and interest expenses.

Contribution Approach

An income statement formatting that separates fixed from variable costs, showing contribution margin.

Opportunity Cost

The loss of potential gain from other alternatives when one option is chosen.

Cost Formula

An equation or method used to determine the total cost of producing goods or services, combining fixed costs, variable costs, and sometimes semi-variable costs.