Decide What Values of the Variable Cannot Possibly Be Solutions $$12 x ^ { - 2 } - 3 x ^ { - 1 } = 54$$

question 269

Multiple Choice

Decide what values of the variable cannot possibly be solutions for the equation.
- $$12 x ^ { - 2 } - 3 x ^ { - 1 } = 54$$

• A) \(\left\{ - \frac { 9 } { 4 } , - 2 \right\}\)
• B) \(\left\{ \frac { 9 } { 4 } , - 2 \right\}\)
• C) \(\left\{ \frac { 4 } { 9 } , - \frac { 1 } { 2 } \right\}\)
• D) \(\left\{ \frac { 9 } { 4 } , 2 \right\}\)

---

Definitions:

Molecules

Groups of two or more atoms held together by chemical bonds, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.

Active Site

A specific region of an enzyme (generally near the surface) that accepts one or more substrates and catalyzes a chemical reaction. Compare with allosteric site.

Enzyme Molecule

A biological catalyst that speeds up the rate of chemical reactions in cells without being consumed in the process.

Substrate

A substance on which an enzyme acts; a reactant in an