find 'a' such that (-5)^a+2×5^4=(-5)^9
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Answered by
9
Answer:
(-5)^a+2 ×(-5)^4 = (-5)^9
(-5)^a+2 = (-5)^9 / (-5)^4
we know that : a^m / a ^n = a ^m-n
(-5)^a+2 = (-5)^9-4
(-5)^a+2 = (-5)^ 5
since the bases are same equate them
a+2 = 5
a = 5 - 2
a = 3
Step-by-step explanation:
Answered by
1
Answer:
Step-by-step explanation:
-5)^a+2 = (-5)^9-4
(-5)^a+2 = (-5)^ 5
since the bases are same equate them
a+2 = 5
a = 5 - 2
a = 3
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