(-5) power x+1 ×(-5)power 5 = (-5)power 7
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4
Answer:
1
Explanation:
(-5)^(x+1) ×(-5)^5 = (-5)^7
=> (-5)^(x+1+5) = (-5)^7
[ Since , a^m × a^n = a^m+n ]
=> (-5)^(x+6) = (-5)^7
=> x+6 = 7
[ Since , If a^m = a^n then m=n]
=> x = 7-6
=> x = 1
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