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olga55 [171]
4 years ago
13

What is the sum or difference?

Mathematics
2 answers:
omeli [17]4 years ago
5 0

Answer:

A. a. 9x^4 b. 3x^5y

Step-by-step explanation:

a. 5x^4 + 4x^4

Since these are to the same power, they are like terms and we can add them

9x^4


b. 12x^5y − 9x^5y

Since these are to the same power, they are like terms and we can subtract them.

3x^5y

Aleksandr [31]4 years ago
5 0
It would be A hope this helped!
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