Mathematics · Indices and Surds
If 2x-1 + 2x+1 = 1280, then the value of x2 + 9x is:
- 1186
- 290
- 3162✓
- 478
Correct answer
162
Download Single Question PDF
Save this question and verified answer as a clean study sheet with live clickable link.
Share with Friends & Study Groups
Challenge your peer aspirants on WhatsApp or Telegram to solve this question!
Preparing for Mathematics?
Practice full-length mock tests with real exam timers, instant score analysis, and all-India ranking.
Want more practice questions on Indices and Surds?
Solve complete topic-wise tests with detailed solutions on GkGet.
Related Practice Questions
Recommended practice questions in Mathematics · Indices and Surds