Answer:
THIS IS YOUR ANSWER:



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Answer:
3(a + 5b + 7c) and 2x(2 + 5y + 11z)
Step-by-step explanation:
3a + 15b + 21c
3(a + 5b + 7c)
4x + 10xy + 22xz
2x(2 + 5y + 11z)
Your answer is, x=1.
Hope this helps.
Answer:
the last one is a polynomial
Step-by-step explanation: