Which of the following is the correct expanded form for the series below? GO
4
Σ(3n+ 7) 3D1
O (7+3. 1)+(7+3.2)+(7+3.3)+(7+3.4)
O (7+1)+(7+2)+(7+3)+(7+4)
O (3.1)+(3.2)+(3-3)+(3.4)
O 3+32 +33 +34 +7

Ask your question to the AI advisor

Ai-bot is an expert in any field and is the perfect companion for reliable and useful answers and advice on a variety of topics, including science, history, technology, art, sports, health, culture and more.