Solve the Equation $8 x ^ { 2 } - 2 x - 21 = 0$

question 76

Multiple Choice

Solve the equation. $8 x ^ { 2 } - 2 x - 21 = 0$

• A) \(\left\{ \frac { 3 } { 2 } , - \frac { 7 } { 4 } \right\}\)
• B) \(\left\{ - \frac { 3 } { 2 } , \frac { 7 } { 4 } \right\}\)
• C) \(\left\{ - \frac { 3 } { 2 } , - \frac { 7 } { 4 } \right\}\)
• D) \(\left\{ - \frac { 3 } { 2 } , \frac { 4 } { 7 } \right\}\)
• E) \(\left\{ \frac { 3 } { 2 } , \frac { 7 } { 4 } \right\}\)

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Definitions:

Nucleic Acids

Macromolecules that store and transmit genetic information, including DNA and RNA.

Nucleotides

The basic building blocks of DNA and RNA, composed of a nitrogenous base, a sugar, and a phosphate group.

Polymers

Large molecules composed of many repeated subunits, known as monomers, which have a wide array of characteristics and uses in both natural and synthetic forms.

Steroid

Type of lipid molecule having a complex of four carbon rings—e.g., cholesterol, estrogen, progesterone, and testosterone.