4 years ago

If u could answer this u would be magical

Mathematics

1 answer:

11Alexandr11 [23.1K]4 years ago

8 0

Answer:

12r^2 +r -7

Step-by-step explanation:

9r^2 +4r -7 +3r^2 -3r

Combine like terms

9r^2 +3r^2 +4r -3r -7

12r^2 +r -7

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