Answer:
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1) Let's write out both expressions subtracting 4m²+2mn+8n² from 2m²+6mn+2n²

2) Note that when we subtract 4m^2 + 2mn + 8n^2 from 2m^2 + 6mn + 2n^2 we need to swap the sign by placing -1 outside the parentheses and then combine like terms adding those terms algebraically.
Answer:
Step-by-step explanation:
X-16=-8
Add 16 on both sides
x=-8+16
And solve; your answer will be
x=8
4,230, which is solved by multiplying both the questions and the students