Find the value of x if 1990 1991 =2%. 2
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Answer:
Step-by-step explanation:
(1/2)^1990 -(1/2)^1991=2^x
(1/2)^1990-(1/2)^1990+(1/2)^1=2^x
2^-1=2^x
-1=x
Step-by-step explanation:
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