Question

Urgent I’m so confused thank you all

Answer 1

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`7u {}^(7) + 18u {}^(4)`

arrange it to standard form

if there is a same degree copy it

must understand this

Addition

(same sign)

• add the number and copy the sign

(unlike sign)

• subtract the number and copy the sign of the larger number

Subtraction

• Change the sign of the subtrahend and proceed to addition

Multiplication

(same sign)

• multiply the number and the sign is +(positive)

(unlike sign)

• multiply the number and the sign is -(negative)

Hope that helps (⁠ ⁠╹⁠▽⁠╹⁠ ⁠)

Answer 2

12v⁴ + 11v⁷

Explanation:

1. Combine like terms

(-3v⁴ + 2v⁷) + (9v⁷ + 15v⁴)

=

-3v⁴ + 2v⁷ + 9v⁷ + 15v⁴

2. Group the like terms

(-3v⁴ + 15v⁴) + (2v⁷ + 9v⁷)

=

12v⁴ + 11v⁷

Final answer:

12v⁴ + 11v⁷