Answer:
Hello,
Step-by-step explanation:
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<u>Formula used (a+b)^2=a²+2ab+b²</u>

Answer:
i dont get it
Step-by-step explanation:
The answer is C. you can check the attached picture.
Answer:
9 19/21
Step-by-step explanation:
2 and 4/7 + 7 3/9 or 7 1/3. If you find common denominator its 21. So 2 and 12/21 and 7 7/21. If you add that would equal 9 19/21.
Hope this helps :)