Add or Subtract

question 54

Multiple Choice

Add or subtract. Then simplify. If a denominator has two or more factors (other than monomials) , leave it in factored form. Express the answer using the denominator of the first fraction when applicable.
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Definitions:

Paracrine Secretion

A form of cell signaling in which the target cell is close to the signal-releasing cell, involving substances that exert their effects only on neighboring cells.

Interstitial Fluid

The fluid that surrounds the cells in tissues, providing nutrients and removing waste.

Neighboring Cells

Cells that are situated close to each other, often sharing a similar function or contributing to the same biological process.

Oxytocin

A hormone produced by the hypothalamus and stored in the posterior pituitary gland, known for its roles in childbirth, lactation, and social bonding.