For the Equation, Determine the Constants a and B That $$\frac { x } { ( x + 2 ) ( x - 2 ) } = \frac { A } { ( x + 2 ) } + \frac { B } { ( x - 2 ) }$$

question 423

Multiple Choice

For the equation, determine the constants A and B that make the equation an identity.
- $$\frac { x } { ( x + 2 ) ( x - 2 ) } = \frac { A } { ( x + 2 ) } + \frac { B } { ( x - 2 ) }$$

• A) \(\mathrm { A } = \frac { 1 } { 2 } , \mathrm {~B} = 1\)
• B) \(A = 1 , B = \frac { 1 } { 2 }\)
• C) \(\mathrm { A } = - \frac { 1 } { 2 } , \mathrm {~B} = \frac { 1 } { 2 }\)
• D) \(\mathrm { A } = \frac { 1 } { 2 } , \mathrm {~B} = \frac { 1 } { 2 }\)

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Carbohydrate

Monosaccharide (simple sugar) or the organic molecules composed of monosaccharides bound together by chemical bonds—for example, glycogen. For each carbon atom in the molecule, there are typically one oxygen molecule and two hydrogen molecules.

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The layer of fat located under the skin, serving as insulation to regulate body temperature and as an energy reserve.

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Nutrients

Substances that provide nourishment essential for growth and the maintenance of life.