Q. 25⋅(41)7Which of the following expressions is equivalent to the given expression?Choose 1 answer:(A) 2−2(B) 2−4(C) 2−9(D) 210
Understand Expression: Understand the given expression and the properties of exponents.We have the expression 25×(41)7. We know that (41) is the same as 2−2 because 41=222=2221=2(1−2)=2−1.
Rewrite Using Property: Rewrite the expression using the property from Step 1.We can rewrite (41)7 as (2−2)7.So, the expression becomes 25⋅(2−2)7.
Apply Power Rule: Apply the power of a power rule to the second term.Using the power of a power rule (am)n=am∗n, we get:(2−2)7=2−2∗7=2−14.Now, the expression is 25×2−14.
Combine Terms: Apply the product of powers rule to combine the terms.Using the product of powers rule am×an=a(m+n), we combine the terms:25×2−14=2(5−14)=2−9.
Match with Options: Match the result with the given options.The simplified expression is 2−9, which matches option (C).
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