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Grade: 9

                        

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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