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```
If a m ×a n =a mn then m(m-2) + n(m-2) is: a) 2n+4/n-2 b)0 c)n(2n+4)/n-1 d)n+1/n-1

```
2 years ago

## Answers : (1)

Arun
24738 Points
```							dear student a^m * a^n = a^m+n hence m + n = mn now m (n – 2) + n (m – 2) = mn + mn – 2(m + n)  = 2mn – 2mn = 0
```
2 years ago
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• 731 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions