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erastova [34]
3 years ago
7

Please help me solve this and please also show work so I can understand it BETTER PLEASEEE ITS DUE

Mathematics
1 answer:
ratelena [41]3 years ago
8 0

Answer:

6. 8b²-5b-4

7. -3x²+9x-4

8. 3

9. 6a+15

Step-by-step explanation:

you will subtract/add the numbers with the same variables and exponent.

ex. (number 6) 7b²+ b²= 8b²

5b= 5b 8b²+5b-4

1-5= -4

(plus 5b because it didnt come out to a negative) if you have any questions, say in the comments and ill try my best to help

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