Question

Compare the structure of the two

Answer 1

Answer:

1. single term
2. sum of 4 terms, some of which can be expanded further

Step-by-step explanation:

1. 3x

This is a single term with one variable of the first degree.

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2. 4x + 9(2x + 1) x² + 6(-2x + 1) - 3(7 + x?)

This is a sum of 4 terms, some of which can be expanded:

• 4x
• 9(2x+1)x^2  ⇒  18x^3 +9x^2
• 6(-2x +1)  ⇒  -12x +6
• -3(7+x?)  ⇒  -3x? -21

The expression can be simplified by combining like terms.