Write the Following Expressions So That No Answer Includes Negative $\left( y ^ { 4 } \right) ^ { - 1 }$

question 30

Short Answer

Write the following expressions so that no answer includes negative exponents. Assume the variables are nonzero.
- $\left( y ^ { 4 } \right) ^ { - 1 }$

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Definitions:

Topsoil

The uppermost layer of soil, which has the highest concentration of organic matter and microorganisms, and is where most plant roots grow.

Productivity

The rate at which goods or services are produced, especially in relation to the input of labor, materials, and energy.

Contour Farming

An agricultural technique wherein farming practices are executed following the natural contours of the land, aimed at reducing soil erosion.

Terrace Farming

An agricultural practice of making flat areas or terraces on hilly terrain to prevent erosion and runoff, improve irrigation, and increase usable farming area.