1 Answer

Itsmejodie · Answer 1 · 2021-11-17T15:27:22+0000

Answer:

4b is simplified. There are no like terms to combine.

${b}^(2)$

is the only term with exponent of 2.

13b is the only term b, exponent of 1.

13 is the only number.

Explanation:

For 4d, it is hard to see but I think it is

$7a + 4 - 6 {a}^(2) - 2a$

Reorder terms from largest to smallest exponent.

$- 6 {a}^(2) + 7a - 2a + 4$

$- 6 {a}^(2) + (7 - 2)a + 4$

$- 6 {a}^(2) + 5a + 4$

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