Add or Subtract

question 228

Multiple Choice

Add or subtract. Then simplify by collecting like radical terms, if possible. Assume that no radicands were formed by
raising negative numbers to even powers.
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Definitions:

Pruning Effects

The neurological process in which unused neural connections in the brain are eliminated to make room for new, more efficient pathways, especially significant during adolescence.

Lateralization Effects

The differing functions or activities of the right and left hemispheres of the brain.

Primary Neurotransmitter

A principal chemical substance released by neurons to transmit signals across synapses to other neurons or muscles.

Limbic System

A group of brain structures, including the amygdala, hippocampus, basal ganglia, and hypothalamus. Because these brain structures are associated more with emotion than with reasoning, the limbic system is often described as the “emotion brain” (in contrast to the cerebral cortex, which some have dubbed the “reasoning brain”).