Find the Sum or Difference $$- \left( 2 x ^ { 3 } + x - 7 \right) + \left( 4 x ^ { 3 } + 3 x ^ { 2 } \right) - \left( 7 x ^ { 2 } - 9 x - 1 \right)$$

question 574

Multiple Choice

Find the sum or difference.
- $$- \left( 2 x ^ { 3 } + x - 7 \right) + \left( 4 x ^ { 3 } + 3 x ^ { 2 } \right) - \left( 7 x ^ { 2 } - 9 x - 1 \right)$$

• A) \(6 x ^ { 3 } - 10 x ^ { 2 } + 8 x - 8\)
• B) \(1 x ^ { 3 } - 2 x ^ { 2 } - 8 x + 8\)
• C) \(2 x ^ { 3 } + 4 x ^ { 2 } + 10 x - 8\)
• D) \(2 x ^ { 3 } - 4 x ^ { 2 } + 8 x + 8\)

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Definitions:

Piaget's Theory

A developmental theory by Jean Piaget that outlines how children's abilities to think and reason develop through four stages from infancy to adolescence.

Cognitive Development

The process of growth and change in intellectual/mental abilities such as thinking, reasoning, and understanding over the lifespan.

Underestimated

To judge something to be smaller or less important than it actually is.

Overregularization

A language development error where children apply standard grammatical rules incorrectly to irregular verbs or nouns.