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kotegsom [21]
3 years ago
8

May somebody help me please

Mathematics
2 answers:
Pepsi [2]3 years ago
6 0

Hi there!

Answer:

 A. 7x² - 9x - 5

Step-by-step explanation:

If you simply take away the parentheses, you get:

3x² - 4x + 7 + 4x² - 5x - 12

Then, just add them all together, and you get:

  A. 7x² - 9x - 5

Let me know if you have any questions!

Arisa [49]3 years ago
5 0

add 3+4=7x². -4-5=-9x. 7-12=-5. Answer : A

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