Q. Which expression is equivalent to 94×44?Choices:(A) 368(B) 364(C) 1/364(D) 3616
Identify Bases and Exponents: Identify the base numbers and their exponents in the given expression.The given expression is 94×44. Here, 9 and 4 are the bases, and both are raised to the power of 4.
Factor Bases to Common Base: Factor the bases to express them as powers of a common base if possible.The number 9 can be written as 32, and the number 4 can be written as 22. Therefore, we can rewrite the expression as (32)4×(22)4.
Apply Power of Power Rule: Apply the power of a power rule, which states that a^b)^c = a^{b*c}\. Using this rule, we get \(\(3^2)^4 * (2^2)^4 = 3^{2*4} * 2^{2*4} = 3^8 * 2^8\
Multiply Bases with Exponents: Multiply the expressions with the same exponents by combining the bases.Since both 38 and 28 have the same exponent, we can multiply the bases first and then apply the exponent. This gives us (3×2)8=68.
Factor 6 and Simplify: Recognize that 68 is not one of the answer choices, but 6 can be factored further.The number 6 can be written as 2×3, and since we already have 28 and 38 from the previous step, we can combine them to get (2×3)8=68.
Express in Terms of Base4: Realize that 68 is not in the simplest form for comparison with the answer choices.We need to express 68 in terms of a base raised to the power of 4 to match the answer choices. Since 6 is 2×3, we can write 68 as (24×34)2.
Apply Distributive Property: Apply the distributive property of exponents over multiplication.We have (24×34)2, which can be written as (24)2×(34)2. This simplifies to 28×38, which is the same as 68 from the previous steps.
Recognize Equivalent Expression: Recognize that 28×38 is equivalent to (2×3)8, which is 68. We have already established that 68 is the simplified form of the given expression. Now we need to express it in terms of a base raised to the power of 4 to match the answer choices.
Express in Terms of Base4: Express 68 in terms of a base raised to the power of 4.Since 68=(62)4, and 62 is 36, we can write 68 as 364.
Match to Answer Choices: Match the simplified expression to the answer choices.The expression 364 corresponds to choice (B) 364.
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