find value of unknown:-
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Answer explained through the photo
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Answer:
x= -2
Step-by-step explanation:
(1/5)^-5. *(1/5)^-7 =(1/5)^8x
(1/5)^-5+(-7) =(1/5)^8x
-5-7=8x
-16=8x
x= -2
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